A prescription is a written order by aregistered physician directing thepharmacist to prepare or dispensepharmacological agents for the diagnosis,prevention or treatment of a disease.
There are two types of prescription: Pre compounding prescription: Prescription for already prepared drug (by pharmaceuticalcompanies) e.g. Cap. Ciprofloxacin (500 mg) etc. Extemporeous prescription: The pharmacists prepare the medication according to thedrugs and dosages directed by the physician.
Types of Prescribing - Rational Prescribing - Irrational Prescribing • Rational Prescribing: It fulfills the following criterias – 1. Appropriate diagnosis 2. Appropriate indications 3. Appropriate drug 4. Appropriate dosage 5. Appropriate duration 6. Appropriate route of administration
Irrational Prescribing: When medically inappropriate, ineffective and economically inefficient drugs are used, it is called irrational prescribing.Some common irrational prescribing:1. Excessive use of drugs.2. Overuse of antibiotics.3. Prescribing new costly drug, when an alternate cheaper drug is available etc.
Requirements of Prescriptions 1. Date 2. Name and address of doctor. 3. Name and address of the patient. 4. Rx. It’s a traditional esoteric symbol for the word ‘Recipe’-‘take thou!; It is pointless. 5. The name and dose of the medicine. 6. Direction to the pharmacist. 7. Instruction for the patient. 8. Signature of the doctor.
Symbol of Prescription(1) Dr. X Date: MBBS. MD (Cardiology) Address:Patients Name: Mr. Y Age: 60 years Sex: MaleAddress:Rx(2) Tab. Cardopril (25 mg) (4)¼+0+¼- Before meal (40 days)Tab. Disprin CV – 100(3) 0 + 1 + 0 - After meal (30 days) (5) Prescribers Signature
Parts of Prescription: An ideal prescription should have the following parts:- Superscription (1)- Inscription (2)- Subscription (3)- Transcription (4)- Signature (5)
Parts of Prescription: Superscription: Superscription includes: - Information about the prescriber. - Information about the patient. - Rx (it means ‘take it!’) Inscription: - Inscription gives the information about the name of the drug (generic or trade name), and its formulation, unit dosage.
Parts of Prescription: Subscription: - Subscription provides information to the pharmacists about the quantity and dosage form of the drug to be dispensed. Transcription: - Transcription is the prescribers direction to the patient contains instruction about the amount of drug, time and frequency of doses to be taken. Signature: - Prescription should be signed by the prescriber.
Abbreviation of Prescriptiona ante beforep post afterac ante cibum before foodpc post cibum after foodbd bis in die twice a day (bid is also used)
Abbreviation of Prescription ter die sumendus 3 times a day (tid is also used)tds quarter die sumendus 4 times a day (qid is also used)qds statim immediatelystat si opus sit if necessarysos omni die every dayod
Abbreviation of Prescription omni mane every morningom omni nocte every nighton per os by mouthpo subcutaneous by subcutaneous injectionsc intramuscular by intramuscular injectionim
Abbreviation of Prescription intravenous by intravenous injection iv quaque every q repetatur let it be repeated rep pro re nata as required prn nomen proprium proper name NP