This document provides information about small volume parenterals (SVPs). It defines SVPs as injections packaged in containers of 100ml or less. SVPs can include pharmaceutical products, biological products, and more. They are commonly classified as single dose ampoules, single dose vials, multiple dose vials, and prefilled syringes. The document discusses vehicles, additives, processing, and more regarding the formulation and manufacturing of SVPs.
Pilot Plant:-
“Defined as a part of pharmaceutical industry where a lab scale formula is transformed into viable product by the development of liable practical procedure for manufacture”.
Scale-up:-
“The art of designing of prototype using the data obtained from the pilot plant model”
Pilot plant Techniques and Product consideration for liquid dosage forms.D.R. Chandravanshi
CONTENTS:-
DEFINITION
INTRODUCTION
OBJECTIVES
LIQUID DOSAGE FORM
STEPS INVOLVED IN PILOT PLANT FOR ORAL LIQUID
GENERAL CONSIDERATION
Reporting responsibility
Personal requirements
Space requirements
Review of formula
Raw materials
Relevant processing equipments
Process evaluation
GMP consideration
Assurance
PILOT PLANT SCALE UP FOR SUSPENSION
PILOT PLANT SCALE UP FOR EMULSION
REFERENCES
Technology Transfer in Pharma Industry, Technology Transfer in Pharmaceutical Industry, Pharmaceutical Technology Transfer, Pharma Tech Transfer, Naseeb basha, Pharmaceutical Tech Transfer, Naseeb basha Technology Transfer in Pharma Industry, Naseeb basha Pharmaceutical Technology Transfer
PARENTERAL ROUTES OF DRUG ADMINISTRATIONZainab Riaz
PARENTERAL ROUTE OF DRUG ADMINISTRATION
The term parenteral refers to injectable routes of administration of drug.
So as a hole it means outside of intestine.
PARENTRAL MEDICATIONS AND STERILE FLUIDS:
The parenteral route of drug administration are:
1. Intravenous IV
2. Intramuscular IM
3. Intradermal
4. Subcutaneous
PYROGENS: The water used in parenteral should be free of pyrogens.
METHODS OF REMOVING PYROGENS:
1. Distillation
2. Reverse osmosis
3. Heating at 180 degree celcius for 3 to 4 hours
4. Adsorption method
OFFICIAL TYPES OF INJECTIONS:
SOLVENTS AND VEHICLES USED FOR INJECTIONS:
STERILE WATER FOR INJECTION USP
BACTERIOSTATIC WATER FOR INJECTION
NaCl injection USP
BACTERIOSTATIC SODIUM CHLORIDE INJECTION USP
RINGER INJECTION USP
LACTATED RINGER INJECTION USP
NON AQUEOUS VEHICLES
ADDED SUBSTANCES USED IN PARENTERALS
SOLUBILIZING AGENTS
STABILIZERS
ANTIMICROBIAL AGENTS
ANTI OXIDANTS USED IN PARENTERALS.
Pilot Plant:-
“Defined as a part of pharmaceutical industry where a lab scale formula is transformed into viable product by the development of liable practical procedure for manufacture”.
Scale-up:-
“The art of designing of prototype using the data obtained from the pilot plant model”
Pilot plant Techniques and Product consideration for liquid dosage forms.D.R. Chandravanshi
CONTENTS:-
DEFINITION
INTRODUCTION
OBJECTIVES
LIQUID DOSAGE FORM
STEPS INVOLVED IN PILOT PLANT FOR ORAL LIQUID
GENERAL CONSIDERATION
Reporting responsibility
Personal requirements
Space requirements
Review of formula
Raw materials
Relevant processing equipments
Process evaluation
GMP consideration
Assurance
PILOT PLANT SCALE UP FOR SUSPENSION
PILOT PLANT SCALE UP FOR EMULSION
REFERENCES
Technology Transfer in Pharma Industry, Technology Transfer in Pharmaceutical Industry, Pharmaceutical Technology Transfer, Pharma Tech Transfer, Naseeb basha, Pharmaceutical Tech Transfer, Naseeb basha Technology Transfer in Pharma Industry, Naseeb basha Pharmaceutical Technology Transfer
PARENTERAL ROUTES OF DRUG ADMINISTRATIONZainab Riaz
PARENTERAL ROUTE OF DRUG ADMINISTRATION
The term parenteral refers to injectable routes of administration of drug.
So as a hole it means outside of intestine.
PARENTRAL MEDICATIONS AND STERILE FLUIDS:
The parenteral route of drug administration are:
1. Intravenous IV
2. Intramuscular IM
3. Intradermal
4. Subcutaneous
PYROGENS: The water used in parenteral should be free of pyrogens.
METHODS OF REMOVING PYROGENS:
1. Distillation
2. Reverse osmosis
3. Heating at 180 degree celcius for 3 to 4 hours
4. Adsorption method
OFFICIAL TYPES OF INJECTIONS:
SOLVENTS AND VEHICLES USED FOR INJECTIONS:
STERILE WATER FOR INJECTION USP
BACTERIOSTATIC WATER FOR INJECTION
NaCl injection USP
BACTERIOSTATIC SODIUM CHLORIDE INJECTION USP
RINGER INJECTION USP
LACTATED RINGER INJECTION USP
NON AQUEOUS VEHICLES
ADDED SUBSTANCES USED IN PARENTERALS
SOLUBILIZING AGENTS
STABILIZERS
ANTIMICROBIAL AGENTS
ANTI OXIDANTS USED IN PARENTERALS.
University Institute of Pharmaceutical Sciences is a flag bearer of excellence in Pharmaceutical education and research in the country. Here is another initiative to make study material available to everyone worldwide. Based on the new PCI guidelines and syllabus here we have a presentation dealing with the types of parenteral formulation including the types of parenteral route for administration along withcomponents of parenteral formulation.
Thank you for reading.
Hope it was of help to you.
UIPS,PU team
A brief description of pharmaceutical dosage forms and their route of administration and typical process flow and manufacturing details. It may help new aspirants who wnts to knoiw aboute dosageforms and their administration routes.
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• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
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Small volume parenterals
1. Small Volume Parenterals
Dr. Prashant L. Pingale
Associate Professor-Pharmaceutics
GES’s Sir Dr. M. S. Gosavi College of Pharmaceutical Education and Research, Nashik-5
3. Contents…
• Classification,
• Types of vehicles,
• Selection of vehicles and added substance,
• Processing and manufacturing of SVPs,
• Pilot plant scale up for SVPs.
3
4. Small Volume Parenteral
• According to USP: “ an injection that is packaged in containers labelled as containing
100 ml or less”.
• All the sterile products packaged in vials, ampoules, cartridges, syringes, bottles or
any other container that is 100 ml or less fall under the class of SVP.
• Ophthalmic products packaged in squeezable plastic containers, although topically
applied to the eye rather than administered by injection, also fall under the
classification of Small Volume Injections (SVI) as long as the container size is 100 ml
or less.
• SVP aqueous solutions can be administered by intravenous route because of local
irritation.
4
5. Small Volume Parenteral
• Small volume parenteral products can be formulated and packaged in several
ways and include a wide variety of products like:
• Pharmaceutical products, Biological products, Allergenic extracts,
Radiopharmaceutical products, Genetically engineered or biotechnology
products, Liposome and lipid products.
• An injection is a preparation intended for parenteral administration and/or
for constituting or diluting a parenteral article prior to administration.
5
6. Small Volume Parenteral
• Types of preparations:-
• Drug injection
• Drug for injection
• Drug injectable emulsion
• Drug injectable suspension
• Drug for injectable suspension
6
7. Classification of SVP
• Single dose ampoules (glass/plastic),
• Single dose vials
• Multiple dose vials,
• Prefilled syringes.
7
8. Single Dose Ampoules
• A single-dose or single-use ampoule is a ampoule of liquid medication intended for
parenteral administration (injection or infusion) that is meant for use in a single
patient for a single case, procedure, injection.
• Single-dose or single-use ampoule are labeled as such by the manufacturer and
typically lack an antimicrobial preservative.
• Ampoule that are labeled as single-dose or single-use should be used for only a single
patient as part of a single case, procedure, injection.
8
9. Single Dose Vials
• A Single-Dose Vial (SDV) is approved for use on a single patient for a single
procedure or injection.
• SDVs typically lack an antimicrobial preservative.
• Do not save leftover medication from these vials.
• Harmful bacteria can grow and infect a patient.
• Discard after every use!
9
10. Multiple Dose Vials
• A Multiple-dose Vial (MDV) is recognized by its FDA-approved label.
• MDVs can be used for more than one patient when aseptic technique is followed, ideally
even MDVs are used for only one patient.
• MDVs typically contain an antimicrobial preservative to help limit the growth of bacteria.
• Preservatives have no effect on bloodborne viruses (i.e. hepatitis B, hepatitis C, HIV).
• Discard MDVs when the beyond-use date has been reached, when doses are drawn in a
patient treatment area, or any time the sterility of the vial is in question!
10
11. Prefilled syringes
✓ A prefilled syringe is a single-dose packet of parental drug to which a
needle has been fixed by the manufacturer.
✓ Prefillable syringes have become an increasingly important option in
the packaging and delivery of injectable drug products.
✓ Humira®, Enbrel®, Copaxone®, Lovenox® and Rebif® are examples
of blockbuster drugs that are being extensively administered
via prefilled syringes.
11
14. Vehicles for Injection
• Aqueous vehicles:
• Frequently, isotonic (to blood) to which drug may be added at time of use.
• Water-miscible vehicles:
• Portion of the vehicle in the formulation,
• used primarily to effect solubility of drugs and/or reduce hydrolysis
• ethyl alcohol; polyethylene glycol (liquid) and propylene glycol
• Nonaqueous vehicles:
• Fixed oils (vegetable origin, and rancid resistance) used in hormone preparations
14
15. Aqueous vehicles
• Water for Injection (WFI) USP
• Sterile Water for Injection (SWFI)
• Bacteriostatic Water for Injection USP
• Sterile Water for Irrigation USP
• Sterile Water for Inhalation USP
15
16. Water for Injection (WFI) USP
• Highly purified water used as a vehicle for injectable preparations which
will be subsequently sterilized.
• USP requirement: NMT 10 ppm (1 mg/100 ml) of total solids.
• pH of 5.0 – 7.0 .
• WFI may be prepared by either distillation or reverse osmosis.
• Stored in chemically resistant tank.
• Used as solvent for preparation of parenteral solutions.
• It is not required to be sterilized and pyrogen free.
• It is intended to be used within 24 hours after collection.
• The water should be collected in sterile and pyrogen free containers.
16
Specifications for WFI as per USP
17. Sterile Water for Injection (SWFI)
• Sterile Water for Injection is Water for Injection packaged and rendered sterile.
• Is water for injection that is sterilized and packaged in single dose container of type1 and 2 glass.
• It is used for extemporaneous prescription compounding and as a sterile diluent for parenteral
products.
• It may also be used for other applications when
• Access to a validated water system is not practical, or
• Where only a relatively small quantity is needed.
• Sterile Water for Injection is packaged in single-dose containers not larger than 1 L.
• Multiple- dose containers not exceeding 30 ml.
• They are permitted to contain higher levels of solid than WFI because of possible leaching.
• Used for washing wounds, surgical incisions or body tissues. 17
Why TDS in
SWFI is more
than WFI?
18. Bacteriostatic Water for Injection USP
• Water for Injection, packaged and rendered sterile, to which one or more suitable
antimicrobial preservatives are added or Is sterile water for injection that contains one
or more suitable antimicrobial agents.
• Sterile water containing 0.9% benzyl alcohol that is used to dilute or dissolve
medications.
• It is intended to be used as a diluent in the preparation of parenteral products.
• These are typically for multi-dose products that require repeated content withdrawals.
• It also packaged in single or multiple dose container of type 1 and 2 glass.
• It may be packaged in single-dose or multiple-dose containers not larger than 30 mL.
18
19. Sterile Water for Irrigation USP
• Water for Injection packaged and sterilized in single-dose containers which may be
larger than 1 L.
• Is water for injection that is sterilized and suitably packaged.
• They allow rapid delivery of their contents.
• Due to its usage, Sterile Water for Irrigation is not required to meet Particulate Matter in
Injections.
• It contains no antimicrobial agents or other added substances.
19
20. Sterile Water for Inhalation USP
• Is Water for Injection that is packaged and rendered sterile.
• It is intended for use in inhalators and in the preparation of inhalation
solutions.
• This monograph has no requirement to meet.
• It carries a less stringent specification for bacterial endotoxins than Sterile
Water for Injection.
• Therefore is not suitable for parenteral applications.
20
21. Water-miscible vehicles
• A number of solvents that are miscible with water have been used as a portion of the
vehicle in the formulation of parenterals.
• These solvents are used to solubilize certain drugs in an aqueous vehicle and to reduce
hydrolysis.
• The most important solvents in this group are ethyl alcohol, liquid polyethylene glycol
and propylene glycol.
• Ethyl alcohol is used in the preparation of solutions of cardiac glycosides and the glycols
in solutions of barbiturates, certain alkaloids, and certain antibiotics.
• Such preparations are given intramuscularly.
21
22. Water-miscible vehicles
• There are limitations with the amount of these co-solvents that can be
administered, due to toxicity concerns, greater potential for
hemolysis, and potential for drug precipitation at the site of injection.
• Formulation scientists needing to use one or more of these solvents
must consult the literature and toxicologists to ascertain the
maximum amount of co-solvents allowed for their particular product.
22
23. Non-Aqueous Vehicles
• The most important group of non-aqueous vehicles is the fixed oils.
• The USP provides specifications for such vehicles, indicating that the fixed oils must
be of vegetable origin so they will metabolize, will be liquid at room temperature,
and will not become rancid readily.
• The USP also specifies limits for the free fatty acid content, iodine value, and
saponification value (oil heated with alkali to produce soap, i.e., alcohol plus acid
salt).
• The oils most commonly used are corn oil, cottonseed oil, peanut oil, and sesame oil.
23
24. Non-Aqueous Vehicles
• Fixed oils are used as vehicles for certain hormone (e.g., progesterone,
testosterone, deoxycorticosterone) and vitamin (e.g., Vitamin K,
Vitamin E) preparations.
• The label must state the name of the vehicle, so the user may beware
in case of known sensitivity or other reactions to it.
24
25. Antimicrobials
• Added for fungistatic or bacteriostat action or concentration.
• Used to prevent the multiplication of micro-organisms.
• Examples:
• Benzyl alcohol -- 0.5 – 10 %
• Benzethonium chloride -- 0.01 %
• Methyl paraben -- 0.01 – 0.18 %
• Propyl paraben -- 0.005 – 0.035 %
• Phenol -- 0.065 – 0.5 %
25
Preservatives
Multidose containers must have
preservatives unless prohibited by
monograph.
Large volume parenteral must not
contain preservative b’coz it may
be dangerous to human body if it
contain in high doses.
27. Buffers
• Added to maintain pH,
• Change in pH may causes degradation of the products
• Acetates, citrates, phosphates are generally used.
Factors affecting selection of buffers:
• Effective range,
• Concentration
• Chemical effect on the total product
Examples:
• Acetic acid, adipic acid, benzoic acid, citric acid, lactic acid
• Used in the conc. of 0.1 to 5.0 %
27
28. Stabilizers
• As parenterals are available in solution form they are most prone to unstabilize.
• Used to stabilize the formulation
• Maintain stable
Examples:
• Creatinine – 0.5- 0.8 %
• Glycerin – 1.5 – 2.25 %
• Niacinamide – 1.25 -2.5 %
• Sodium saccharin – 0.03 %
• Sodium caprylate – 0.4 %
28
29. Chelating agents
• Used to form the complex with the metallic ions present in the formulation so that
the ions will not interfere during mfg. of formulation.
• They form a complex which gets dissolved in the solvents.
Examples:
• Disodium edetate – 0.00368 - 0.05 %
• Disodium calcium edetate - 0.04 %
29
30. Solubilizing agents
• Used to increase solubility of slightly soluble drugs
• They acts by any one of the following:
• Solubilizers,
• Emulsifiers or
• Wetting agents.
Examples:
• Dimethylacetamide, Ethyl alcohol, Glycerine, Lecithin, PEG – 40 + Castor oil, PEG – 300, Polysorbate 20,
40, 80
30
31. Inert gases
• Another means of enhancing the product integrity of oxygen sensitive medicaments
is by displacing the air the solution with nitrogen or argon.
• This technique may be made more effective by first purging with nitrogen or boiling
the water to reduce dissolved oxygen.
• The container is also purged with nitrogen or argon before filling and may also be
topped off with gas before sealing.
31
32. Tonicity adjusting agents
• Used to reduce the pain of injection.
• Buffers may acts as tonicity contributor as well as stabilizers for the pH.
• Isotonicity depends on permeability of a living semipermeable membrane
• Hypotonic : swelling of cells (enlargement)
• Hypertonic: shrinking of cells (reduction)
Examples:
• Glycerin, Lactose, Mannitol, Dextrose, Sodium chloride, Sorbitol
32
33. Surfactants
• Used:
• to dispose a water-insoluble drug as a colloidal dispersion.
• for wetting powder.
• to prevent crystal growth in a suspension.
• to provide acceptable syringability.
• for Solubilizing steroids and fat-soluble vitamins.
• Example:
• Polyethylene 0.1 to 0.5%
• Sorbitan monooleate 0.05 to 0.25%
33
34. Protectants
• Used to protect against loss of activity caused by some stress
• Used to prevent loss of active ingredients by adsorption to process equipment or to
primary packaging materials
• Protectants primarily used in protein formulations.
Examples:
• Sucrose, glucose, lactose, maltose, trehalose (2 to 5%)
• Human serum albumin (0.1 to 1%)
34
35. Processing and manufacturing of SVPs
• The production area where the parenteral preparation are
manufactured can be divided into five sections:
• Clean-up area
• Preparation area
• Aseptic area
• Quarantine area
• Finishing & packaging area
35
37. Clean- up area
• Non aseptic area.
• Free from dust, fibers and micro-organisms.
• Constructed in such a way that should withstand moisture, steam and detergent.
• Ceiling and walls are coated with material to prevent accumulation of dust and micro-organisms.
• Exhaust fans are fitted to remove heat and humidity.
• The area should be kept clean so as to avoid contamination to aseptic area.
• The containers and closures are washed and dried in this area.
37
38. Preparation area
• The ingredients are mixed and preparation is prepared for filling.
• Not essential that the area is aseptic.
• Strict precaution is taken to prevent contamination from outside.
• Cabinets and counters: SS.
• Ceiling and walls : sealed and painted.
38
39. Aseptic area
• Filtration and filling into final containers and sealing is done.
• The entry of outside person is strictly prohibited.
• To maintain sterility, special trained persons are only allowed to enter and work.
• Person who worked should wear sterile cloths.
• Should be subjected for physical examination to ensure the fitness.
• Minimum movement should be there in this area.
• Ceiling and walls and floors : sealed and painted or treated with aseptic solution and there should not
be any toxic effect of this treatment.
• Cabinets and counters: SS.
• Mechanical equipments : SS. 39
40. Air in aseptic area
• Free from fibers, dust and micro organisms.
• HEPA filters are used which removes particles upto 0.3 micron.
• Fitted in laminar air flow system, in which air is free from dust and micro
organisms flows with uniform velocity.
• Air supplied is under positive pressure which prevents particulate contamination
from sweeping.
• UV lamps are fitted to maintain sterility.
40
41. Quarantine area
• After filling, sealing and sterilization the products or batch is kept in this
area.
• The random samples are chosen and given for analysis to QC dept.
• The batch is send to packing after issuing satisfactory reports of analysis
from QC.
• If any problem is observed in above analysis the decision is to be taken for
reprocessing or others.
41
42. Finishing and packaging area
• After proper label, the product is given for packing.
• Packing is done to protect the product from external environment.
• The ideal Packing is that which protects the product during transportation,
storage, shipping and handling.
• The labeled container should be packed in cardboard or plastic containers.
• Ampoules should be packed in partitioned boxes.
42
46. Plant, pilot plant and scale up
• Plant: It is a place were the 5 M’s like money, material, man, method and
machine are brought together for the manufacturing of the products.
• Pilot Plant: It is the part of the pharmaceutical industry where a lab scale
formula is transformed into a viable product by development of liable and
practical procedure of manufacture.
• Scale-up: The art for designing of prototype using the data obtained from
the pilot plant model.
46
47. What is pilot plant scale up?
• In the pilot plant, a formulae is transformed into a viable product by the
development of a reliable and practical method of manufacturing.
• Pilot plant is the intermediate plant between the laboratory scale and the
production plant.
47
48. Objectives of scale-up
• To try the process on a model of proposed plant before committing large sum of money on a
production unit.
• Examination of the formula to determine it’s ability to withstand Batch-scale and process
modification.
• Evaluation and Validation for process and equipments.
• To identify the critical features of the process.
• Guidelines for production and process controls.
• To provide master manufacturing formula with instructions for manufacturing procedure.
• To avoid the scale-up problems.
48
49. Steps in scale-up
✓ Define product economics based on projected market size and competitive selling and provide guidance for
allowable manufacturing costs
✓ Conduct laboratory studies and scale-up planning at the same time
✓ Define key rate-controlling steps in the proposed process
✓ Conduct preliminary larger-than-laboratory studies with equipment to be used in rate-controlling step to
aid in plant design
✓ Design and construct a pilot plant including provisions for process and environmental controls, cleaning
and sanitizing systems, packaging and waste handling systems, and meeting regulatory agency
requirements
✓ Evaluate pilot plant results (product and process) including process Economics to make any corrections
and a decision on whether or not to proceed with a full scale plant development 49
50. Purpose of conducting Pilot Plant Studies
✓ To evaluate the effect on the process of a large scale of operation and to collect other data so that a good
design of a larger unit may be made with a high probability of commercial success.
✓ To find and examine all products or waste which may not be seen in laboratory scale.
✓ By the use of pilot plant, it is possible to minimize the wastes, hence better yield of prescribed dosage
form.
50
51. A pilot plant can be used for…
• Evaluating the results of laboratory studies and making product and process
corrections and improvements.
• Producing small quantities of product for sensory, chemical, microbiological
evaluations, limited market testing or furnishing samples to potential customers,
shelf-life and storage stability studies.
• Providing data that can be used in making a decision on whether or not to proceed
to a full-scale production process; and in the case of a positive decision, designing
and constructing a full-size plant or modifying an existing plant.
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52. Injectables
• The majority of the parenteral solutions requiring a variety of equipments for liquid
mixing, filtration, transfer and related activities.
• Most of the equipments are composed of stainless steel, with glass lined vessels
employed for preparation of formulations sensitive to iron and other metal ions.
• The vessels can be equipped with external jackets for heating and/or cooling and
various types of agitators, depending upon the mixing requirements.
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54. Working area of a parenteral pilot plant
• Incoming goods are stored in special areas for Quarantine, Released and Rejected
status.
• A cold room is available for storage of temperature-sensitive products.
• Entrance into the warehouse and production areas is restricted to personnel.
• The route for final products is separated from the incoming goods.
• Storage of final products is done in designated areas in the warehouse.
• Sampling and weighing of the raw material is performed in a dedicated sampling
area and a central weighing suite, respectively.
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55. Warehousing
• All samples should be aseptically taken, which mandates unidirectional airflow and full operator
gowning.
• These measures reduces the potential for contamination ingress into materials that are yet to
receive any processing at any site.
• First the materials are passed through class 100,000 i.e. grade D environment for presterilization.
• Transfer of materials are carried out in air-locks to avoid cross contamination.
• The preparation areas are supplied with HEPA filters.
• There should be more than 20 air changes per hour.
• The preparation place is Class 100 area.
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56. Compounding area
• In this area formulation is compounded.
• Cabinets and counters are made up of stainless steel.
• They should fit tightly to walls so that there are no void spaces where dirt can
accumulate.
• The ceiling walls and floor should be constructed of impervious materials so that
moisture will run off.
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57. Aseptic area
• The ceiling walls, floor must be sealed so that they can be washed and
sanitized with disinfectant.
• The filling of the formulations is performed in a class 100 environment.
• Air locks serve as a transition points between one environment and another.
• They are fitted with the UV lights, spray systems or other devices that may
be effectively utilized to prevent contamination of the materials.
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58. HEPA filters
• HEPA filters, by definition, remove at least 99.97% of Airborne particles
0.3 micrometers (µm) in diameter.
• HEPA filters are composed of a mat of randomly arranged fibres.
• These fibres are typically composed of fiberglass and possess diameters
between 0.5 and 2.0 micron.
• The air space between HEPA filter fibres is much greater than 0.3 μm.
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59. Types of parenteral dosage form: Solutions
• Solutions of drug are suitable for parenteral administration are referred as injections.
• They are manufactured by dissolving the drug and suitable excipients, adjusting the pH,
filtration through 0.22µm membrane and autoclaving the final product.
• These are of two types:
• Large Volume Parenterals (LVP)
• Small Volume Parenterals (SVP)
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60. Types of parenteral dosage form:
Suspensions
• Suspensions is one of the most difficult parenteral dosage form.
• It can be injected through a 18 to 21 gauge needle.
• Formulation consists of active ingredients suspended in aqueous solution.
• Two methods are used to prepare parenteral suspension:
• Sterile vehicle & powders are combined aseptically.
• Sterile solutions are combined and the crystals formed in-situ.
• Penicillin G procaine injectable suspension USP
• Sterile Testosterone injectable suspension USP
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61. Problems associated with suspensions
• Syringeability: It refers to the handling characteristics of a suspension
while drawing and manipulating it in a syringe.
• Injectability: It refers to the properties of the suspension during
injection.
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62. Types of parenteral dosage form:
Emulsions
• Emulsions is a dispersion of two or more immiscible liquids.
• It includes following types:
• Water-in-oil emulsions of allergenic extracts (subcutaneously)
• Oil-in-water sustained-release depot preparations (intramuscularly)
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63. Types of parenteral dosage form: Dry Powder
• Many drugs are physically or chemically unstable and hence
formulated as dry powders, which can be reconstituted in solution by
addition of water.
• Sometimes it may be an aqueous suspension such as ampicillin
trihydrate and spectinomycin hydrochloride.
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