Preparation and evaluation of kollidon sr matrix tablets of tinidazole for co...IJSIT Editor
Amoebiasis is an infection of the large intestine caused by Entamoeba histolytica, and it is mainly
present in the intra-intestinal lumen. The efficient treatment of amoebiasis and other colonic infections could
be achieved by targeting the drug to the colon. Tinidazole is the drug of choice for intestinal amoebiasis and
other colonic infections and the best approach for this drug is to target the drug to the colon which would
make the drug effective with low dose and prevent the potential hazards observed in conventional dose.
Moreover, addition of suitable polymers in the formulation could enhance the drug solubility. The aim of the
present investigation was to formulate matrix formulations using different concentrations of Kollidon SR and
PVP K-30, Eudragit S100 to prevent the premature drug release in the GI tract, the matrix formulations
further taken for compression to test the suitability for targeted drug delivery to the colon. The release
kinetics of the formulations was calculated. All the Matrix, compression coated formulations showed the
desired physicochemical properties as per the official limits. Based on the drug release study in pH 1.2 (0.1N
HCl), Phosphate buffer pH 6.8 and the results showed that among the 9 formulations FE2 and FL3 showed
good dissolution profile to control the drug release respectively.
Preparation and evaluation of kollidon sr matrix tablets of tinidazole for co...IJSIT Editor
Amoebiasis is an infection of the large intestine caused by Entamoeba histolytica, and it is mainly
present in the intra-intestinal lumen. The efficient treatment of amoebiasis and other colonic infections could
be achieved by targeting the drug to the colon. Tinidazole is the drug of choice for intestinal amoebiasis and
other colonic infections and the best approach for this drug is to target the drug to the colon which would
make the drug effective with low dose and prevent the potential hazards observed in conventional dose.
Moreover, addition of suitable polymers in the formulation could enhance the drug solubility. The aim of the
present investigation was to formulate matrix formulations using different concentrations of Kollidon SR and
PVP K-30, Eudragit S100 to prevent the premature drug release in the GI tract, the matrix formulations
further taken for compression to test the suitability for targeted drug delivery to the colon. The release
kinetics of the formulations was calculated. All the Matrix, compression coated formulations showed the
desired physicochemical properties as per the official limits. Based on the drug release study in pH 1.2 (0.1N
HCl), Phosphate buffer pH 6.8 and the results showed that among the 9 formulations FE2 and FL3 showed
good dissolution profile to control the drug release respectively.
ABSTRACT
Hyperglycemia is the technical term for high blood glucose (sugar). It
happens when the body has too little or not enough insulin or when the
body can‘t use insulin properly. The main objective of the present
research work was to develop a bilayer tablet of immediate release
Pioglitazone and controlled release Metformin Hydrochloride, which is
used as an Anti-hyperglycemic agent. Metformin Hydrochloride has
biological half-life nearly about 6 hours, so, an attempt was made in
the direction of preparation and optimization of a combination of
sustained release and immediate release in a single tablet. In controlled
release layer natural gums like xanthum gum, gum trgacanth and guar
gum were used as retarding materials and in immediate release laye
croscarmellose sodium was used as a superdisintegrent to give the faster release of
pioglitazone. The tablets were prepared by wet granulation method and by direct
compression. Granules were evaluated for precompression parameters and the tablets were
evaluated for post compression parameters.
Key Words: Bilayer tablets, Metformin Hydrochloride, pioglitazone, xanthum gum, guar
gum, gum tragacanth and crosscarmellose sodium.
Formulation and evaluation of mouth dissolving film containing antiemetic dru...siddhant thakur
The final presentation on the research topic of "FORMULATION AND EVALUATION OF MOUTH DISSOLVING FILM CONTAINING ANTIEMETIC DRUG FOR THE TREATMENT OF MOTION SICKNESS"
This presentation includes the Introduction about MDFs, Literature reviews, Statement of the research problem, Objectives of the study, Plan of research work, Drug selections, Preformulation studies, Design expert 11, Preparation of MDFs and Evaluations, Optimization of formulations and final conclusion
Formulation and evaluation ofmetformin HCl micro beads by ionotropic gelation...Sagar Savale
The Metformin HCL Micro Beads is formulated by the Ionotropic Gelation Method. The CMC is a Swellable
polymer is responsible for the Sustained release action or activity. A combination of CMC (Carboxy Methyl
Cellulose) and Sodium Alginate shows better sustained release activity. The PreparedSustained released Micro
Beadsis Evaluated In terms of bulk density, tapped density, angle of repose, Carr’s Index, Swelling Index, Drug
Content, % Encapsulation Efficiency and vitro study. The result associated in Optimized batch is good to
Satisfactory and having a good free flowing property. The Drug Content and % Encapsulation Efficiency values are
within the pharmacopeia limit. The in vitro Dissolution studies shows Maximum percentage of release of drug
(71.15) with in end of 4 Hours.
Formulation and invivo evaluation of mucoadhesive microspheres embedded clero...SriramNagarajan19
In this study an attempt was made to prepare mucoadhesive microcapsules of Clerodendrum phlomidis extract using alginate polymers for prolonged release. Encapsulation of extract into sodium alginate polymer was done by ionic-gelation technique. In vivo testing of the mucoadhesive microcapsules in diabetic albino rats demonstrated significant antidiabetic effect of extract. The hypoglycemic effect obtained by mucoadhesive microcapsules was for more than 16 h whereas plain CP extract produced an antidiabetic effect for only 4 h suggesting that mucoadhesive microcapsules are a valuable system for the long term delivery of CP extract. In-vivo data obtained over a 120-h period indicate that CP extract loaded alginate microspheres from batch F7 showed the better glycemic control than control and a commercial brand of the drug.
formulation and evaluation of microbeadsgurleen kaur
Microencapsulation has been employed to sustain the drug release, reduce or eliminate drug related adverse effects, dose intake and improve the bioavailability inspite drug undergo extensive first pass metabolism ultimately improve the compliance in pharmacotherapy of inflammation and pain.
Microencapsulation by ionotropic gelation technique is one of the widely used method for preparation of calcium alginate beads which has ability to form gels reaction with calcium salts .
Microencapsulation has been employed to sustain the drug release, reduce or eliminate drug related adverse effects, dose intake and improve the bioavailability inspite drug undergo extensive first pass metabolism ultimately improve the compliance in pharmacotherapy of inflammation and pain.
Microencapsulation by ionotropic gelation technique is one of the widely used method for preparation of calcium alginate beads which has ability to form gels reaction with calcium salts .
Microsponge containing acyclovir sodium as active
constituent with four different formulation by changing the properties of drug(acyclovir sodium), polymer(ethyl cellulose), emulsifier(PVA) were obtained using emulsion solvent
diffusion method.
The main objective of present research investigation is to formulate
the sustained release tablet of Doxofylline using 32 factorial design.
Doxofylline, an anti-Asthmatic agent, belongs BCS class-III agent.
The SR tablets of Doxofylline were prepared employing different
concentrations of HPMC K100M and Chitosan in different
combinations by Direct Compression technique using 32 factorial
design. The concentration of Polymers, HPMC K100M and
Chitosan required to achieve the desired drug release was selected as
independent variables, X1 and X2 respectively whereas, time required
for 10% of drug dissolution (t10%), 50% (t50%), 75% (t75%) and 90%
(t90%) were selected as dependent variables. Totally nine formulations
were designed, Formulated and are evaluated for hardness, friability,
thickness, % drug content, In-vitro drug release. From the Results
it was concluded that all the formulation were found to be with
in the Pharmacopoeial limits and the In-vitro dissolution profiles
of all formulations were fitted in to different Kinetic models, the
statistical parameters like intercept, slope & regression coefficient
were calculated. Polynomial equations were developed for t10%,
t50%, t75%, t90%. Validity of developed polynomial equations were
verified by designing 2 check point formulations (C1, C2). According
to SUPAC guidelines the formulation (F4) containing combination
of 10% HPMC K100M and 15% Chitosan, is the most similar
formulation (similarity factor f2= 64.501, dissimilarity factor f1=
6.862 & No significant difference, t= 0.23001) to marketed product
(DOXOLIN). The selected formulation (F4) follows Zero order,
Higuchi’s kinetics, and the mechanism of drug release was found to be Non-Fickian Diffusion anomalous Super Case-II Transport (n= 0.963).
Formulation and evaluation of oral biphasic drug delivery system of Metronida...inventionjournals
In the present study, a newly innovative drug delivery system of biphasic Metronidazole (MTZ) tablet has been studied. An attempt was made to improve the patient’s adherence and the potential clinical outcomes by reducing the dosing frequency by formulating bilayer tablets containing Metrodinazole. Each bilayer tablet is composed of a sustained release (SR) layer and an immediate release (IR) layer for rapid drug release. Five different formulations of bilayer tablets were formulated using HPMC as hydrophilic polymer to retarded the drug release and the effect of Starch and MCC on the release profile were evaluated. Wet granulation method was used to prepare granules of the immediate and sustained release layers. The tablets were evaluated for their physical parameters and all valuesobtained found to be within the acceptable limits. The dissolution test has been carried out using the USP type II rotating paddle. Collected samples were analyzed using the high performance liquid chromatography. The mechanisms of Metrodinazole release from the sustained release layer were fitted into zero-order, first order, Higuchi, Hixon- Crowell model and Korsmeyer-Peppas release model. The results of the dissolution profiles showed that the drug release from the sustained release layer varied depending on the amount of HPMC and the presence of Starch or MCC. The kinetics of the release of MTZ from the different formulations showed good fitting with Higuchi model with correlation coefficients (R2) of 0.9965 - 0.9985. From values obtained for the diffusional exponent, n, Korsmeyer-Peppas equation observed that for all the formulations n value ranged from 0.4662 to 0.5370, and this demonstrates that the release mechanism followed non-Fickian type of release ( anomalous transport).
Preformulation and physicochemical property of the drugSHIVANEE VYAS
“It is the study of the physical and chemical properties of the
drug prior to compounding process”.
Preformulation commences when a newly synthesized drug shows sufficient pharmacologic promise in animal models towarrant evaluation in man.
These studies should focus on physicochemical properties of new compound that affect drug performance & development of efficaciouss dosage form.
This properties may provide;
A rationale for formulation design
Support the need for molecular modification.
Formulation development and invitro evaluation of lamotrigine fast dissolving...SriramNagarajan19
The present study was to formulate and evaluate oral fast dissolving Oral tablet containing Lamotrigine. Present study reveals that all the nine formulated tablet showed satisfactory tablet parameters. It can be concluded that, Oral fast dissolving tablet -containing Lamotrigine can be prepared by direct compression method. 10% CCS (FV) tablet exhibited required disintegration time and dissolution time. The drug release was about 98.7 % in 15min. The accelerated stability studies of the optimized F5 formulation indicates that the formulated oral fast dissolving tablet were unaffected after 3 months storage under accelerated conditions as there were no signs of visually distinguishable changes in appearance, disintegration time and cumulative percentage of drug release. From the present investigation it can be concluded that oral fast dissolving tablet formulation can be a potential novel drug dosage form for pediatric, geriatric and also for general population.
Abstract:
The Chronopharmacotherapy the drug administration is synchronised with circadian rhythms Formulation development of Microspheres is more reliable formulation as compare to single type dosage formulation due to it avoids dose dumping, as per required drug release profile is achieved For microspheres many polymers are used such as albumin, gelatine, starch, Eudragit, Polyacrylamide (“PAM”) these material loading capacity is high. Micro sponges which are Spherical are called as micro-balloons. Due to its hollow structure it shows good floating properties. In these systems use of Carbon-dioxide (CO2) as gas generating system which are used for floating purpose. The objective of present investigation is to prepared and evaluate a floating pulsatile drug delivery system of Aceclofenac. The strategy adopted for microspheres containing Aceclofenac as a material were prepared by emulsion solvent diffusion technique. Drug and polymer were mixed in dichloromethane and ethanol at 1:1 ratio. The drug and polymer solution were poured in water 50% W/V polyvinyl alcohol maintained at 30-40 C and the solution was stir at 500rpm using mechanical stirrer, The microspheres obtain were washed repeatedly with water until free from poly vinyl alcohol. The developed formulations were evaluated yield of floating microspheres particle size and shape, drug entrapment efficiency in-vitro evolution of floating ability, in-vitro drug release study. On the basis of these evolution parameters it was found that optimised floating pulsatile release formulation F7 showed higher drug entrapment efficiency floating time 6.8 minutes and the drug and polymer 32 1:3 ratio the particle size was increased.
Key Words: Chronopharmacotherapy, Floating pulsatile drug delivery, Aceclofenac.
ABSTRACT
Hyperglycemia is the technical term for high blood glucose (sugar). It
happens when the body has too little or not enough insulin or when the
body can‘t use insulin properly. The main objective of the present
research work was to develop a bilayer tablet of immediate release
Pioglitazone and controlled release Metformin Hydrochloride, which is
used as an Anti-hyperglycemic agent. Metformin Hydrochloride has
biological half-life nearly about 6 hours, so, an attempt was made in
the direction of preparation and optimization of a combination of
sustained release and immediate release in a single tablet. In controlled
release layer natural gums like xanthum gum, gum trgacanth and guar
gum were used as retarding materials and in immediate release laye
croscarmellose sodium was used as a superdisintegrent to give the faster release of
pioglitazone. The tablets were prepared by wet granulation method and by direct
compression. Granules were evaluated for precompression parameters and the tablets were
evaluated for post compression parameters.
Key Words: Bilayer tablets, Metformin Hydrochloride, pioglitazone, xanthum gum, guar
gum, gum tragacanth and crosscarmellose sodium.
Formulation and evaluation of mouth dissolving film containing antiemetic dru...siddhant thakur
The final presentation on the research topic of "FORMULATION AND EVALUATION OF MOUTH DISSOLVING FILM CONTAINING ANTIEMETIC DRUG FOR THE TREATMENT OF MOTION SICKNESS"
This presentation includes the Introduction about MDFs, Literature reviews, Statement of the research problem, Objectives of the study, Plan of research work, Drug selections, Preformulation studies, Design expert 11, Preparation of MDFs and Evaluations, Optimization of formulations and final conclusion
Formulation and evaluation ofmetformin HCl micro beads by ionotropic gelation...Sagar Savale
The Metformin HCL Micro Beads is formulated by the Ionotropic Gelation Method. The CMC is a Swellable
polymer is responsible for the Sustained release action or activity. A combination of CMC (Carboxy Methyl
Cellulose) and Sodium Alginate shows better sustained release activity. The PreparedSustained released Micro
Beadsis Evaluated In terms of bulk density, tapped density, angle of repose, Carr’s Index, Swelling Index, Drug
Content, % Encapsulation Efficiency and vitro study. The result associated in Optimized batch is good to
Satisfactory and having a good free flowing property. The Drug Content and % Encapsulation Efficiency values are
within the pharmacopeia limit. The in vitro Dissolution studies shows Maximum percentage of release of drug
(71.15) with in end of 4 Hours.
Formulation and invivo evaluation of mucoadhesive microspheres embedded clero...SriramNagarajan19
In this study an attempt was made to prepare mucoadhesive microcapsules of Clerodendrum phlomidis extract using alginate polymers for prolonged release. Encapsulation of extract into sodium alginate polymer was done by ionic-gelation technique. In vivo testing of the mucoadhesive microcapsules in diabetic albino rats demonstrated significant antidiabetic effect of extract. The hypoglycemic effect obtained by mucoadhesive microcapsules was for more than 16 h whereas plain CP extract produced an antidiabetic effect for only 4 h suggesting that mucoadhesive microcapsules are a valuable system for the long term delivery of CP extract. In-vivo data obtained over a 120-h period indicate that CP extract loaded alginate microspheres from batch F7 showed the better glycemic control than control and a commercial brand of the drug.
formulation and evaluation of microbeadsgurleen kaur
Microencapsulation has been employed to sustain the drug release, reduce or eliminate drug related adverse effects, dose intake and improve the bioavailability inspite drug undergo extensive first pass metabolism ultimately improve the compliance in pharmacotherapy of inflammation and pain.
Microencapsulation by ionotropic gelation technique is one of the widely used method for preparation of calcium alginate beads which has ability to form gels reaction with calcium salts .
Microencapsulation has been employed to sustain the drug release, reduce or eliminate drug related adverse effects, dose intake and improve the bioavailability inspite drug undergo extensive first pass metabolism ultimately improve the compliance in pharmacotherapy of inflammation and pain.
Microencapsulation by ionotropic gelation technique is one of the widely used method for preparation of calcium alginate beads which has ability to form gels reaction with calcium salts .
Microsponge containing acyclovir sodium as active
constituent with four different formulation by changing the properties of drug(acyclovir sodium), polymer(ethyl cellulose), emulsifier(PVA) were obtained using emulsion solvent
diffusion method.
The main objective of present research investigation is to formulate
the sustained release tablet of Doxofylline using 32 factorial design.
Doxofylline, an anti-Asthmatic agent, belongs BCS class-III agent.
The SR tablets of Doxofylline were prepared employing different
concentrations of HPMC K100M and Chitosan in different
combinations by Direct Compression technique using 32 factorial
design. The concentration of Polymers, HPMC K100M and
Chitosan required to achieve the desired drug release was selected as
independent variables, X1 and X2 respectively whereas, time required
for 10% of drug dissolution (t10%), 50% (t50%), 75% (t75%) and 90%
(t90%) were selected as dependent variables. Totally nine formulations
were designed, Formulated and are evaluated for hardness, friability,
thickness, % drug content, In-vitro drug release. From the Results
it was concluded that all the formulation were found to be with
in the Pharmacopoeial limits and the In-vitro dissolution profiles
of all formulations were fitted in to different Kinetic models, the
statistical parameters like intercept, slope & regression coefficient
were calculated. Polynomial equations were developed for t10%,
t50%, t75%, t90%. Validity of developed polynomial equations were
verified by designing 2 check point formulations (C1, C2). According
to SUPAC guidelines the formulation (F4) containing combination
of 10% HPMC K100M and 15% Chitosan, is the most similar
formulation (similarity factor f2= 64.501, dissimilarity factor f1=
6.862 & No significant difference, t= 0.23001) to marketed product
(DOXOLIN). The selected formulation (F4) follows Zero order,
Higuchi’s kinetics, and the mechanism of drug release was found to be Non-Fickian Diffusion anomalous Super Case-II Transport (n= 0.963).
Formulation and evaluation of oral biphasic drug delivery system of Metronida...inventionjournals
In the present study, a newly innovative drug delivery system of biphasic Metronidazole (MTZ) tablet has been studied. An attempt was made to improve the patient’s adherence and the potential clinical outcomes by reducing the dosing frequency by formulating bilayer tablets containing Metrodinazole. Each bilayer tablet is composed of a sustained release (SR) layer and an immediate release (IR) layer for rapid drug release. Five different formulations of bilayer tablets were formulated using HPMC as hydrophilic polymer to retarded the drug release and the effect of Starch and MCC on the release profile were evaluated. Wet granulation method was used to prepare granules of the immediate and sustained release layers. The tablets were evaluated for their physical parameters and all valuesobtained found to be within the acceptable limits. The dissolution test has been carried out using the USP type II rotating paddle. Collected samples were analyzed using the high performance liquid chromatography. The mechanisms of Metrodinazole release from the sustained release layer were fitted into zero-order, first order, Higuchi, Hixon- Crowell model and Korsmeyer-Peppas release model. The results of the dissolution profiles showed that the drug release from the sustained release layer varied depending on the amount of HPMC and the presence of Starch or MCC. The kinetics of the release of MTZ from the different formulations showed good fitting with Higuchi model with correlation coefficients (R2) of 0.9965 - 0.9985. From values obtained for the diffusional exponent, n, Korsmeyer-Peppas equation observed that for all the formulations n value ranged from 0.4662 to 0.5370, and this demonstrates that the release mechanism followed non-Fickian type of release ( anomalous transport).
Preformulation and physicochemical property of the drugSHIVANEE VYAS
“It is the study of the physical and chemical properties of the
drug prior to compounding process”.
Preformulation commences when a newly synthesized drug shows sufficient pharmacologic promise in animal models towarrant evaluation in man.
These studies should focus on physicochemical properties of new compound that affect drug performance & development of efficaciouss dosage form.
This properties may provide;
A rationale for formulation design
Support the need for molecular modification.
Formulation development and invitro evaluation of lamotrigine fast dissolving...SriramNagarajan19
The present study was to formulate and evaluate oral fast dissolving Oral tablet containing Lamotrigine. Present study reveals that all the nine formulated tablet showed satisfactory tablet parameters. It can be concluded that, Oral fast dissolving tablet -containing Lamotrigine can be prepared by direct compression method. 10% CCS (FV) tablet exhibited required disintegration time and dissolution time. The drug release was about 98.7 % in 15min. The accelerated stability studies of the optimized F5 formulation indicates that the formulated oral fast dissolving tablet were unaffected after 3 months storage under accelerated conditions as there were no signs of visually distinguishable changes in appearance, disintegration time and cumulative percentage of drug release. From the present investigation it can be concluded that oral fast dissolving tablet formulation can be a potential novel drug dosage form for pediatric, geriatric and also for general population.
Abstract:
The Chronopharmacotherapy the drug administration is synchronised with circadian rhythms Formulation development of Microspheres is more reliable formulation as compare to single type dosage formulation due to it avoids dose dumping, as per required drug release profile is achieved For microspheres many polymers are used such as albumin, gelatine, starch, Eudragit, Polyacrylamide (“PAM”) these material loading capacity is high. Micro sponges which are Spherical are called as micro-balloons. Due to its hollow structure it shows good floating properties. In these systems use of Carbon-dioxide (CO2) as gas generating system which are used for floating purpose. The objective of present investigation is to prepared and evaluate a floating pulsatile drug delivery system of Aceclofenac. The strategy adopted for microspheres containing Aceclofenac as a material were prepared by emulsion solvent diffusion technique. Drug and polymer were mixed in dichloromethane and ethanol at 1:1 ratio. The drug and polymer solution were poured in water 50% W/V polyvinyl alcohol maintained at 30-40 C and the solution was stir at 500rpm using mechanical stirrer, The microspheres obtain were washed repeatedly with water until free from poly vinyl alcohol. The developed formulations were evaluated yield of floating microspheres particle size and shape, drug entrapment efficiency in-vitro evolution of floating ability, in-vitro drug release study. On the basis of these evolution parameters it was found that optimised floating pulsatile release formulation F7 showed higher drug entrapment efficiency floating time 6.8 minutes and the drug and polymer 32 1:3 ratio the particle size was increased.
Key Words: Chronopharmacotherapy, Floating pulsatile drug delivery, Aceclofenac.
Design expert software assisted development and evaluation of cefpodoxime pro...Makrani Shaharukh
Cefpodoxime Proxetil is third generation, broad-spectrum Cephalosporin Antibiotic & it has an oral bioavailability of only 50% and biological half life 2 h so to improve it’s bioavailability sustain release matrix formulation was designed. Sustained release matrix tablets of Cefpodoxime Proxetil prepared by direct compression method based on combination of natural Acacia gum & Karaya gum polymers. 32 full factorial designs optimization study was carried out by using Design Expert Software to find the effect of independent variables, i.e., Acacia gum (X1) and Karaya gum (X2) concentration on dependent variables i.e., Hardness & % CDR. The drug excipient mixtures were subjected to preformulation studies. The tablets were subjected to physicochemical studies, in-vitro drug release, kinetic studies and stability studies. FTIR and DSC studies shown there was no interaction between drug and polymers. Matrix tablet of Cefpodoxime Proxetil were formulated well in term of hardness 5.07 ± 0. 5.93 ± 0.03 kg/cm2, thickness 2.25 ± 0.1 mm to 3.33 ± 0.3 mm, weight variation were within limits. In-vitro release studies show that almost 90 % of drug was release from all the formulation were within 12 h. Formulation F5 selected as a optimized one since it showed optimum hardness & sustained drug release within 12 h in comparison to other formulation. The F5 optimized formulations were subjected to stability studies and shown there were no significant changes in drug content, physicochemical parameters and release pattern. 32 full factorial design optimization technique was successfully used in this research work. Developed matrix tablets of Cefpodoxime Proxetil produced a sustained and effective drug release over a prolonged time frame that led to greater therapeutic efficacy.
The main objective of present investigation is to formulate the floating tablets of
Ranitidine.HCl using 32 factorial design. Ranitidine.HCl, H2-receptor antagonist belongs to
BCS Class-III. The Floating tablets of Ranitidine.HCl were prepared employing different
concentrations of HPMCK4M and Guar Gum in different combinations as a release rate
modifiers by Direct Compression technique using 32 factorial design. The concentration of
Polymers , HPMCK4M and Guar Gum required to achieve desired drug release was selected
as independent variables, X1 and X2 respectively whereas, time required for 10% of drug
dissolution (t10%), 50% (t50%), 75% (t75%) and 90% (t90%) were selected as dependent variables.
Totally nine formulations were designed and are evaluated for hardness, friability, thickness,
% drug content, Floating Lag time, In-vitro drug release. From the Results concluded that all
the formulation were found to be within the Pharmacopoeial limits and the In-vitro
dissolution profiles of all formulations were fitted in to different Kinetic models, the
statistical parameters like intercept (a), slope (b) & regression coefficient (r) were calculated.
Polynomial equations were developed for t10%, t50%, t75%, t90%. Validity of developed
polynomial equations were verified by designing 2 check point formulations(C1, C2).
According to SUPAC guidelines the formulation (F5) containing combination of 22.5%
HPMCK4M and 22.5% Guar Gum, is the most similar formulation (similarity factor f2=85.01,
dissimilarity factor f1= 15.358 & No significant difference, t= 0.169) to marketed product
(ZANTAC). The selected formulation (F5) follows Higuchi’s kinetics, and the mechanism of
drug release was found to be Non-Fickian Diffusion (n= 0.922).
Formulation and Evaluation of Unidirection Bucco- Adhesive Tablet of Sumatrip...Ajay Champaneri
The objective of this research work was to formulate and evaluate PEO WSR
301 bucco-adhesive tablet in combination with Carbopol 934p for controlled
release of Sumatriptan Succinate. To bypass high hepatic first pass metabolism,
unidirection bucco-adhesive tablet is selected dosage form for the experimental
work. Initially preliminary trials were carried out for the selection of excipients
and their relative quantity for incorporation in the dosage form. From the results,
Polyethylene oxide-PEO WSR 301 (mucoadhesive polymer) and Carbopol 934p
(control release) were selected as a suitable excipients for experimentation.
Composition of the mucoadhesive tablet was optimized using 32 full factorial
design where amount of PEO WSR 301 (X1) and amount of Carbopol 934p (X2)
were taken as independent variables and mucoadhesive strength, Drug release
at 6 hour and % swelling index taken as response variables. The formulations of
design batches were characterized for post compression parameters like weight
variation, hardness, thickness, friability, Drug content, swelling index, ex-vivo
Mucoadhesive strength, and surface pH, drug release at 6 hr., ex-vivo residence
time, and curve fitting analysis. The optimized formulation was obtained using
Minitab software based on desirability value. Characterization of optimized
batch was carried out by, ex-vivo permeation study.
The oral route is the most favorable route for administration of drugs because of accurate dosage, low cost of therapy, self medication, non-invasive method, and ease of administration leading to a high level of patient compliance. Of the oral Dosage forms, solid dosage form is the preferred class of product as tablet represents a unit dosage form in which one dose of drug is placed accurately.
Objective: The purpose of the present research investigation was to formulate sustained release (SR) formulations for
losartan potassium using 32
factorial designs. Methods: Losartan potassium is an antihypertensive agent, non-peptide
angiotensin-II receptor (type AT1) blocker, and BCS class-III agent. SR tablet formulations of losartan potassium were
formulated using variable quantities of hydroxymethyl propyl cellulose (HPMC) K100M and xanthan gum in combinations
by direct compression technique. The amount of polymers, HPMC K100M, and xanthan gum required to achieve the drug
release was selected as independent variables, X1
and X2
, respectively, whereas time required to release 10% (t10%), 50%
(t50%), 75% (t75%), and 90% (t90%) of drug from formulation was selected as dependent variables. Nine formulations were
prepared and evaluated for various pharmacopoeial tests. Results: The results reveal that all formulations were found to be
with in the pharmacopoeial limits and in vitro drug release profiles of all formulations were subjected to kinetic modeling.
The statistical parameters such as intercept, slope, and correlation coefficient were determined. Polynomial equations were
developed for dependent variables. Validity of developed polynomial equations was checked by designing two checkpoint
formulations (C1
and C2
). According to SUPAC guidelines, formulation (F4
) containing mixture of 15% HPMC K100M
and 20% xanthan gum is the most identical formulation (similarity factor f2 = 86.747, dissimilarity factor f1 = 1.760, and no
significant difference, t = 0.0477) to marketed product (LOSACAR). Conclusion: Best Formulation F4 follows the first-order,
Higuchi kinetics, and the mechanism of drug release was found to be non-Fickian diffusion anomalous transport (n = 0.825).
KEY WORDS: 32 factorial design, First-order kinetics, Hydroxymethyl propyl cellulose K100M, Losartan potassium,
Non-fickian diffusion mechanism, Sustained release tablet, Xanthan gum
Solubility and dissolution enhancement of BCS class ii drug Piroxicam by soli...Makrani Shaharukh
The Present study was conducted to improve solubility and dissolution of poor water soluble drug Piroxicam. In this research work, Piroxicam Solid Dispersion was prepared kneading method by using, Guar Gum as a carrier. Drug and carriers weight ratio were1:1 to 1:5. The properties of solid were evaluated using Fourier Transform Infra red (FTIR) Spectroscopy, differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and solubility and dissolution studies. The FTIR Spectroscopy showed no chemical interaction between Piroxicam and carrier. DSC studies indicated their no change of melting point of Piroxicam in Solid Dispersion. SEM result showed that Piroxicam was dispersed and was present as amorphous state in the solid dispersions. Solubility of Solid dispersions was highest at Ratio 1:5 is 0.319±0.02 mg/mL. The drug release data of solid dispersion revealed that formulation F5 exhibited more than 95 % drug release after 60 min. Finally we conclude that the solubility & dissolution enhancement is depend on nature and amount of the carrier and when increases the carrier increase the solubility of Piroxicam. Solid dispersion system of Piroxicam and carriers used could improve the solubility and dissolution rate of Piroxicam.
Formulation, Development and Evaluation of Fast Disintegrating Tablet of Piro...ijtsrd
The solubility behavior of drugs remains one of the most exigent aspects in formulation development. With the advent of combinatorial chemistry and high throughput screening, the number of poorly water soluble compounds has dramatically increased. Among all the newly discovered chemical entities, about 40 45 drugs fail to reach market due to their poor water solubility. Because of solubility problem, bioavailability of drugs gets affected and hence solubility enhancement becomes necessary. In present study the attempts have been made to increase the dissolution of BCS class 2 drug Piroxicam using hydrophilic polymers namely polyethylene glycol PEG 6000 and sodium lauryl sulphate as a surfactant by using solid dispersion technique. In solid dispersion microwave induced solid dispersion and conventional fusion method is compared. Drug polymer complex was prepared using batch method. Maximum dissolution rate was obtained of the complex prepared from Piroxicam PEG6000 SLS . A successful solubility enhancement of drug complex was confirmed by taking drug release in phosphate buffer pH 6.8. The drug was characterized according to different compendial methods, on the basis of identification by UV spectroscopy, organoleptic properties and other tests. After that among the all formulation batches, solid dispersion F16 was selected for further tablet formulation batches, nine formulations were developed and studied. The values of pre compression parameters was evaluated, results were within prescribed limits and indicated good free flowing properties. The data obtained of post compression parameters such as weight variation, hardness, friability, wetting time, water absorption ratio, content uniformity, disintegration time and dissolution was found to superior over conventional formulation. The F9 batch with disintegrating time 10 ± 0.52 second and dissolution 93.20 ± 0.61 was selected as optimized formulation and was found superior over other formulation. Batch F9 was also subjected to stability studies for three months and was tested for its disintegrating time, drug contents and dissolution behavior monthly. F9 formulation after stability study was found to be stable. Mr. Yennuwar Dhiresh Pramod | Mr. Sujit Kakade | Mrs. Trusha Shangrapawar | Dr. Ashok Bhosale "Formulation, Development and Evaluation of Fast Disintegrating Tablet of Piroxicam using Solid Dispersion Technique" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-6 | Issue-5 , August 2022, URL: https://www.ijtsrd.com/papers/ijtsrd50422.pdf Paper URL: https://www.ijtsrd.com/pharmacy/pharmaceutics/50422/formulation-development-and-evaluation-of-fast-disintegrating-tablet-of-piroxicam-using-solid-dispersion-technique/mr-yennuwar-dhiresh-pramod
Design and in vitro evaluation of bilayer tablets of Tramadol hydrochloride f...ijperSS
ABSTRACT
The aim of the present work was to design bilayer tablet of Tramadol hydrochloride for biphasic release and its in vitro evaluation. Bilayer tablets comprises of two layers, i.e., immediate release and sustained release layer. The immediate release layer comprised of various superdisintegrants and the sustained release layer comprised HPMC K4M, HPMC K15M, and HPMC K100M as the release retarding polymers. The bilayer tablets were prepared by direct compression method. The seven different formulations (F1-F7) were evaluated for pre- and post-compression parameters. In vitro dissolution studies were carried out for the optimized formulation (F6). It has found that the release of drug from the sustained release layer by 99.5% in 12 h. FT-IR studies revealed that there was no interaction between the drug and polymers used in the study. The release of Tramadol hydrochloride was found to follow a pattern of Korsmeyer-Peppas, with Quasi-Fickian diffusion. Accelerated stability studies were carried out on the prepared tablets in accordance with ICH guidelines. There were no changes observed in physicochemical properties and drug release pattern of tablets. Biphasic drug release pattern was successfully achieved through the formulation of bilayer tablets in this study.
Key words: Tramadol hydrochloride, bilayer tablet, direct compression, carmellose sodium, cross povidone, HPMC K4M.
A simple visible spectrophotometric method is proposed for the determination
of ulipristal acetate present in bulk and tablet formulation. The currently
proposed method is established based on MBTH oxidation by ferric ions to
form an active coupling species (electrophile), followed by its coupling with
the ulipristal in acidic medium to form high intensiϑied green colored chromophore
having max at 609 nm. Validated the method as per the current
guidelines of ICH. Beer’s law was obeyed in the concentration range of 6.25 –
37.50 g mL 1 with a high regression coefϑicient (r > 0.999). Reproducibility,
accuracy, and precision of the method are evident from the low values of R.S.D.
This method can be used in quality control laboratories for routine analysis of
ulipristal acetate in bulk drug and pharmaceutical dosage forms.
Formulation and Evaluation of Mouth Dissolving Tablets in MirtazapineSriramNagarajan15
The present study was undertaken with an aim to development of formulation and evaluation of mouth dissolving tablets in mirtazapine. Mirtazapine, Gelatin, Cross Caramellose Sodium, Mannitol, aerosil, magnesium stearate, aspartame, mango flavor and microcrystalline cellulose were used for the preparation of tablets. The tablets were prepared by wet granulation method and evaluated for tablets thickness, weight variation, tablet hardness, friability, and in vitro drug release. Formulation F6 can be considered as an ideal or optimized formulation for mouth dissolving tablets of mirtazapine. It can be concluded that mouth dissolving tablet of mirtazapine. Can be successfully formulated and improving its bio availability.
EVALUATION OF SERUM LEVELS OF FASTING LIPID PROFILE IN PRE-ECLAMPTIC WOMEN
Wuraola Serah Nnaemeka, Olisekodiaka, MJ, Onuegbu, AJ, Ezeugwunne, IP, Maduka, IG, Suru, SM , Johnkennedy Nnodim
IRO INTERNATIONAL JOURNAL OF MEDICAL AND APPLIED SCIENCES 2018, 1(1):20-23.
SOCIAL AND ECONOMIC BURDEN OF CANCER ON 2020- REVIEW Tamizhazhagan, Pugazh...Earthjournal Publisher
SOCIAL AND ECONOMIC BURDEN OF CANCER ON 2020- REVIEW
Tamizhazhagan, Pugazhendy, Sakthidasan, Jayanthi, Ki-Hyun Kim
IRO INTERNATIONAL JOURNAL OF MEDICAL AND APPLIED SCIENCES 2018, 1(1):24-30.
DEVELOPMENT AND VALIDATION OF STABILITY INDICATING RP-HPLC METHOD FOR ESTIMAT...Earthjournal Publisher
DEVELOPMENT AND VALIDATION OF STABILITY INDICATING RP-HPLC METHOD FOR ESTIMATION OF TERCONAZOLE
Gandhi Santosh V , Phalke Truprti R, Chaudhari Atul P
IRO INTERNATIONAL JOURNAL OF MEDICAL AND APPLIED SCIENCES 2018, 1(1):14-19.
PDF
SPORADIC OUTBREAK CASES OF DIPHTHERIA: A THREE YEARS’ STUDY IN A TERTIARY CAR...Earthjournal Publisher
SPORADIC OUTBREAK CASES OF DIPHTHERIA: A THREE YEARS’ STUDY IN A TERTIARY CARE CENTRE OF NORTHEAST INDIA.
Daiji Gogoi Mohan, Mayuri Gogoi,Naba Kumar Hazarika
IRO INTERNATIONAL JOURNAL OF MEDICAL AND APPLIED SCIENCES 2018, 1(1):1-5.
Call for case report,review and research article for journals
1.International journal of medical and applied sciences.
Volume 6 issue2,2018
2.IRO International journal of medical and applied sciences.
Print journal
Volume 1 issue2, 2018
email: earthjournals@gmail.com
www.earthjournals.in
. Recent Advances in Mucoadhesive Buccal Drug Delivery Systems and Its Marketed Scope and
Opportunities
K.P.Sampath Kumar ,DebjitBhowmik .AmitsankarDutta, Shravan Paswan, Lokesh Deb
Critical Review in Pharmaceutical Sciences 2012, 1(1):83-98.
NEUROLOGICAL MANIFESTATIONS OF HIV/AIDS: A CLINICAL PROSPECTIVE STUDYEarthjournal Publisher
&Objectives: To study the clinical profile of neurological manifestations of Human immunodeficiency
virus(HIV)/Acquired immunodeficiency syndrome(AIDS) and to correlate with the CD4+T lymphocyte
count.Material & Methods : 50 patients who were in the age goup18-55 years, had HIV infection and history
suggestive of Nervous system manifestations were included. The HIV patients with past/present history of
other immunocompromised conditions ( cytotoxic drugs for malignancies, Post organ transplant patients,
Patients using steroids for long term), previous history of epilepsy, focal neurological deficit and head injury
were excluded from the study. All the patients were examined in detail by history and clinical neurological
examination. For all the patients have done routine investigations, and specific investigations like CT/MRI
Brain, Nerve Conduction Studies, CSF Analysis,EEG and Specific antibodies for organisms or parasite done
only wherever it is required. All the patients were correlated with the CD4 T cell count.Results:: Among 50
patients, Commonest age group affected was 26-35 yrs with male predominance(62%). Most common symptom
was non specific headache(38%).Most common opportunistic infetction was Tuberculous meningitis(34%).
Toxoplasmsa encephalitis was the most common space occupying lesion(20%).More number of patients were
seen in the CD4 range in between 51-200 cells/mic.L(72%) with all the diseases had correlation with CD4 T cell
activityCONCLUSION: In the present study, Opportunistic infections were the leading cause in patients
infected with HIV having Neurological manifestastions, usually occurs when the patients had severe
immunosuppresion (CD4 count< 200 cells/μL).
Key words: HIV Positive patients, CD4 T cell count, Neurological manifestation
ARTIFICIAL INTELLIGENCE IN HEALTHCARE.pdfAnujkumaranit
Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
The Gram stain is a fundamental technique in microbiology used to classify bacteria based on their cell wall structure. It provides a quick and simple method to distinguish between Gram-positive and Gram-negative bacteria, which have different susceptibilities to antibiotics
Lung Cancer: Artificial Intelligence, Synergetics, Complex System Analysis, S...Oleg Kshivets
RESULTS: Overall life span (LS) was 2252.1±1742.5 days and cumulative 5-year survival (5YS) reached 73.2%, 10 years – 64.8%, 20 years – 42.5%. 513 LCP lived more than 5 years (LS=3124.6±1525.6 days), 148 LCP – more than 10 years (LS=5054.4±1504.1 days).199 LCP died because of LC (LS=562.7±374.5 days). 5YS of LCP after bi/lobectomies was significantly superior in comparison with LCP after pneumonectomies (78.1% vs.63.7%, P=0.00001 by log-rank test). AT significantly improved 5YS (66.3% vs. 34.8%) (P=0.00000 by log-rank test) only for LCP with N1-2. Cox modeling displayed that 5YS of LCP significantly depended on: phase transition (PT) early-invasive LC in terms of synergetics, PT N0—N12, cell ratio factors (ratio between cancer cells- CC and blood cells subpopulations), G1-3, histology, glucose, AT, blood cell circuit, prothrombin index, heparin tolerance, recalcification time (P=0.000-0.038). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and PT early-invasive LC (rank=1), PT N0—N12 (rank=2), thrombocytes/CC (3), erythrocytes/CC (4), eosinophils/CC (5), healthy cells/CC (6), lymphocytes/CC (7), segmented neutrophils/CC (8), stick neutrophils/CC (9), monocytes/CC (10); leucocytes/CC (11). Correct prediction of 5YS was 100% by neural networks computing (area under ROC curve=1.0; error=0.0).
CONCLUSIONS: 5YS of LCP after radical procedures significantly depended on: 1) PT early-invasive cancer; 2) PT N0--N12; 3) cell ratio factors; 4) blood cell circuit; 5) biochemical factors; 6) hemostasis system; 7) AT; 8) LC characteristics; 9) LC cell dynamics; 10) surgery type: lobectomy/pneumonectomy; 11) anthropometric data. Optimal diagnosis and treatment strategies for LC are: 1) screening and early detection of LC; 2) availability of experienced thoracic surgeons because of complexity of radical procedures; 3) aggressive en block surgery and adequate lymph node dissection for completeness; 4) precise prediction; 5) adjuvant chemoimmunoradiotherapy for LCP with unfavorable prognosis.
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
Ozempic: Preoperative Management of Patients on GLP-1 Receptor Agonists Saeid Safari
Preoperative Management of Patients on GLP-1 Receptor Agonists like Ozempic and Semiglutide
ASA GUIDELINE
NYSORA Guideline
2 Case Reports of Gastric Ultrasound
Title: Sense of Smell
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
CDSCO and Phamacovigilance {Regulatory body in India}NEHA GUPTA
The Central Drugs Standard Control Organization (CDSCO) is India's national regulatory body for pharmaceuticals and medical devices. Operating under the Directorate General of Health Services, Ministry of Health & Family Welfare, Government of India, the CDSCO is responsible for approving new drugs, conducting clinical trials, setting standards for drugs, controlling the quality of imported drugs, and coordinating the activities of State Drug Control Organizations by providing expert advice.
Pharmacovigilance, on the other hand, is the science and activities related to the detection, assessment, understanding, and prevention of adverse effects or any other drug-related problems. The primary aim of pharmacovigilance is to ensure the safety and efficacy of medicines, thereby protecting public health.
In India, pharmacovigilance activities are monitored by the Pharmacovigilance Programme of India (PvPI), which works closely with CDSCO to collect, analyze, and act upon data regarding adverse drug reactions (ADRs). Together, they play a critical role in ensuring that the benefits of drugs outweigh their risks, maintaining high standards of patient safety, and promoting the rational use of medicines.
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
Light House Retreats: Plant Medicine Retreat Europe
Jddr 188
1. JOURNAL OF DRUG DELIVERY RESEARCH
eISSN 2319-1074
Volume 6 Issue 4 2017 www.earthjournals.in 1
RESEARCH ARTICLE
FORMULATION AND EVALUATION STUDY OF
AZITHROMYCIN TABLETS BY VARIOUS NATURAL
POLYMERS AND THEIR COMPARATIVE
PREFORMULATION STUDY
SUNIRMAL BHATTACHARJEE*1
, PRADIP KUMAR KARAR1a
,
SUSANTA PAUL1b
, SIDDHESWAR MAITI1c
, GOURANGA DUTTA2
,
NILAYAN GUHA2a
1
Department of Pharmaceutics & Pharmaceutical Chemistry, Pharmacognosy. School of
Pharmacy ( Seacom Skills University), Kendradangal, Bolpur, Birbhum-731236
2
Department of Pharmaceutics, Guru Nanak Institute of Pharmaceutical Science and
Technology, Kolkata-West Bengal 700110
Corresponding author: SUNIRMAL BHATTACHARJEE, Kendradangal, bolpur, shantiniketan, Pin-731236
ABSTRACT
The present study was to formulate Azithromycin matrix tablet using Xanthan gum, and guar gum as natural
polymers and to elucidate the effect of type of polymers and its concentration on release pattern of drug from
sustained release matrix tablets. Azithromycin matrix tablets were prepared in two batches (batch number F1 to F2)
by direct compression method using xanthan gum and guar gum as natural polymers and microcrystalline cellulose
as a binder and pyrolidone as a water soluble polymer. The in vitro drug release studies of all the batches indicated
that optimized formulation pertaining to Batch no. F2 was a promising system to provide sustained release effect of
drug. The release pattern of the above formulation was best fitted to zero-order model and first order model.
Mechanism of drug release followed was non-Fickian (super case-II) transport mechanism. Based on the above
studies it can be concluded that this Azithromycin drug can be effectively formulated using different classes of
natural polymers which can have greater bioavailability with less dose related side effects having better patient
compliance.
KEYWORDS: Azithromycin, Guar gum, Xanthan gum, microcrystalline cellulose, Pyrolidone, Talc.
INTRODUCTION
Drug delivery is the method or process of administering a pharmaceutical compound to achieve a
therapeutic effect in humans or animals.[1][2]
Drug delivery technologies modify drug release
profile, absorption, distribution and elimination for the benefit of improving product efficacy and
safety, as well as patient convenience and compliance. Drug release is from: diffusion,
degradation, swelling, and affinity-based mechanisms.[3]
Most common routes of administration
include the preferred non-invasive peroral (through the mouth), topical (skin), transmucosal
(nasal, buccal/sublingual, vaginal, ocular and rectal) and inhalation routes.[4][5]
Many drugs,
peptide and protein, antibody, vaccine and gene based, in general may not be delivered using
these routes because they might be susceptible to enzymatic degradation or cannot be absorbed
2. JOURNAL OF DRUG DELIVERY RESEARCH
eISSN 2319-1074
Volume 6 Issue 4 2017 www.earthjournals.in 2
into the systemic circulation efficiently due to molecular size and charge issues to be
therapeutically effective. For this reason many protein and peptide drugs have to be delivered by
injection or a nano-needle array.
To achieve and maintain the concentration of administered drug within the therapeutically
effective range needed for a medication, it is often necessary to administer conventional dosage
forms several times a day. These results in rise of drug level after each administration with
subsequent fall which results in fluctuated drug level. [20][29][25]
The concept of sustained release was introduced in the early 1950s and the first patent on
sustained release was obtained by Israel Lipowski who worked on coated pellets. There has-been
more than 50 years of research and development on sustained release dosage forms to prolong
drug levels in the body[17,21,23]
. Successful fabrication of sustained release product is usually very
difficult and involves consideration of physico-chemical parameters and pharmacokinetic
behavior of drug, route of administration, disease state to be treated and, most important
placement of the drug in the dosage form that will provide the desired temporal and spatial
delivery pattern for the drug. Types of sustained release formulations include liposome’s, drug
loaded biodegradable microspheres and drug polymer conjugates. Basically there are three basic
modes of drug delivery, i.e. targeted delivery, controlled release and modulated release.
MATERIALS AND METHOD:
Materials Azithromycin was gift sample by Medico Remedies Pvt.Ltd.Juhu, Mumbai. Guar
gum, Xanthan gum was procured by Merck Specialties private Limited., India. Talc, Magnesium
stearate was purchased from Apex Chemicals, Ahmadabad, India. Microcrystalline cellulose
(MCC) Polyvinyl pyrolidone was purchased from Loba chemie Private Ltd. Mumbai.
Method
Method for preparation matrix tablet of Azithromycin
The controlled release matrix tablets of azithromycin were prepared by the direct compression
method. The drug, polymers and other excipients were passed through sieve # 80. The controlled
release tablets containing drug, matrix materials, diluents, binder and lubricants were mixed
uniformly and compressed on 10 station tablet machine using 8 mm round and flat punches with
hardness between 5-7 kg cm-2.
Table 1: Formulation trials of 250 mg azithromycin matrix tablets
Formulation
Code
Drug
(mg)
Xanthan
gum
(mg)
Guar
gum
(mg)
MC
C
PVP Talc Magnesi
um
Stearate
Total
F1 250 mg 100
mg-
208
mg
30
mg
6
mg
6 mg 600
F2 250 mg 100 mg 208
mg
30
mg
6
mg
6 mg 600
Each formulation contains 10 tablets.
Table: 2 Micromeritic properties of formulation blends.
Formulation
Code
Angle of
Repose
Bulk Density Tapped
Density
Carr’s Index Hauner’s
Ratio
F1 24.03 ± 0.78 0.425 ±0.03 0.512 ±0.017 16.99 ±2.25 1.20 ±0.03
F2 26.61 ± 0.98 0.467 ±0.1 0.551 ±0.1 15.24 ±1.68 1.17 ±0.02
3. JOURNAL OF DRUG DELIVERY RESEARCH
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The obtained micromeritic properties are given in Table no.5.The value of Angle of repose of
formulation within the range of 30˚, indicating good flow properties for the granules. The tapped
density values ranged between 0.510 ±0.08 to 0.608 ±0.04 g/ cm3
and the bulk density values
ranged between 0.425 ±0.03 to 0.516 ±0.07 g/ cm3
. The result of Carr’s Index range from 14.09
±0.86 to 17.69 ±1.95 % suggests good flow characteristics of the granules. Hausner’s Ratio
range from1.16 ±0.01 to1.21 ±0.09 % which indicates good flow property of microspheres.
RESULT AND DISCUSSION
Preformulation Studies
1. Standard Calibration Curve
The λ max was found at 215nm in 0.1 N HCl , and phosphate buffer (PH
-6.8) and The
standard calibration curve for Azithromycin with regression value of 0.983 and 0.993 are
shown in figure 1 and 2 respectively. The relation between drug concentration and
absorbance is linear and the curve obeys Beer-lamberts law within the concentration range
of 5 to 25 µg/ml of Azithromycin.
2. Differential Scanning Calorimetry Thermogram
The supplied gift sample was identified by DSC thermogram. Identification of the drug can
be described from the fig.8-10 .
3. Drug Polymer Interaction Studies
The FT-IR spectra analysis of losartan potassium and the physical mixtures shows that there
was no significant interaction between drug and polymers as shown in Fig no.5-6.
Physico-chemical properties of matrix tablets of losartan potassium
The thikness (mm), weight variation (%), Hardness (kg/cm2) Friability (%) and content
uniformity (%) were calculated and the results are tabulated in table-3
Table:3 Physico-chemical properties of matrix tablets of azithromycin.
Formulation
Code
Thickness
(± S.D) (mm)
Hardness
(± S.D)
(kg/cm2)
Friability
(± S.D) (%)
Weight
variation
(± S.D) (%)
Percentage
Content
(± S.D) (%)
F1 0.574±0.054 6.73 ± 0.16 0.45 ±0.01 ±2 99.79± 0.36
F2 0.596±0.070 6.79 ± 0.28 0.35 ±0.07 ±1 99.96 ± 0.23
Fig.1. Standard curve of Azithromycin in phosphate buffer 0.1N Hcl (PH
1.2)
4. JOURNAL OF DRUG DELIVERY RESEARCH
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Fig.2. Standard curve of Azithromycin in phosphate buffer (PH
6.8)
Fig. 3. FTIR spectra of Azithromycin
Fig. 4. FTIR spectra of Azithromycin and polymers ( Xanthan gum and Guar gum)
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Fig. 5: DSC Thermogram of Azithromycin
Fig. 6: DSC Thermogram of Azithromycin and polymers
Fig:7. DSC Thermogram of Azithromycin and polymers comparison
In- Vitro Drug Release Studies
It includes the dissolution of the matrix type tablet formulations study of all of the formulations
by fitting the data obtained from dissolution study. In vitro release was carried out for all the
formulations in 0.1 N HCl for 2 hours and phosphate buffer PH 6.8 for 6 hours.
In- Vitro Drug Release Studies
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It includes the dissolution of the matrix type tablet formulations study of all of the formulations
by fitting the data obtained from dissolution study. In vitro release was carried out for all the
formulations in 0.1 N HCl for 2 hours and phosphate buffer PH 6.8 for 6 hours.
Fig 8: Release Data to be Fitted in Zero order Release Kinetics for Formulations F1
Fig 9: Release Data to be Fitted in Zero order Release Kinetics for Formulations F2
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Fig 10: Release Data to be Fitted in First order Release Kinetics for Formulations F1
Fig 11: Release Data to be Fitted in First order Release Kinetics for Formulations F2
Fig: 12. Release Data to be Fitted in Fitted in Higuchi Release Kinetics for Formulations F1
Fig: 13. Release Data to be Fitted in Fitted in Higuchi Release Kinetics for Formulations F2
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Statistical Evaluation of Release Data
Zero Order Model 1st
Order Model H-M Model
Formulations R2
Ko R2
K1 R2
Kh
F1 0.902 4.35 0.800 0.208 0.947 11.88
F2 0.878 4.74 0.769 0.206 0.950 14.33
DISCUSSION:
From the dissolution profile study of two formulations of Azithromycin formulations namely: F1
& F2, it was found that the F2 formulations release profile best predicted by Higuchi Matrix
named found to be the best released with R2
value of 0.950,which is nearer to 0.999. These
properties and the viscous nature of the Guar gum retards release of the drug from the dosage
form. This natural polymer is also appealing for use in drug delivery for a wide range of
molecular weights, varying chemical compositions, low toxicity and biodegradability. The
matrix tablets of xanthan gum, are given sustained release pattern of drugs from tablets.
So it can be concluded from the above experiment that among al two formulations F2 shows best
release profile in our laboratory atmosphere and set up.
ACKNOWLEDGEMENT
The author Acknowledge the support of School of Pharmacy ( Seacom Skills University),
Kendradangal, Bolpur for providing infrastructural facilities to carry out this research work.
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