This document discusses drug nomenclature and the different names used to identify drugs. It explains that drugs have three main names: the chemical name, non-proprietary name, and proprietary name. The chemical name identifies the precise molecular structure and is used by chemists. The non-proprietary name is a short, concise name given by bodies like the USAN and is used more broadly. Proprietary names are given by pharmaceutical companies to brand their versions of drugs. Examples provided are paracetamol, which has the chemical name N-(4-hydroxyphenyl)acetamide and proprietary brand names like Calpol, and aspirin, with the chemical name acetyl salicylic acid and brand name Dispirin

1. DRUG NOMENCLATUE
BY-ABHISHEK KUMAR
ROLL NO-03

2. NOMENCLATURE OF DRUGS
• The term drug nomenclature implies that there are several
names that can be used to identify a drug
• Drugs have three different names;
1. Chemical name
2. Non proprietary name
3. Proprieatry name

3. CHEMICAL NAME
• A chemical name is given when a new chemical entity
(NCE) is developed .
• It is the name given to drug in accordance with rules of
chemical nomenclature established by international union
of pure and applied chemistry.
• It is useful for chemist or technical personnel as it
provides the precise arrangement of atom and atomic
groups in the molecule.

4. CONT…
• It is not used to identify the drug in a clinical or marketing
situation.
• The chemical name is not suitable for use in prescribing.

5. NON PROPRIETARY NAME
• It is a short name given to a drug that is not subjected to
proprietary rights.
• The non proprietary name should always be concise and
meaningful . This is used in discussion and textbook .
• There are 2 classes of non proprietary names;
1. Approved names
2. Official names

6. CONT…
APPROVED NAME: The name is given to drug by bodies
like United Stats Adopted Name Council (USAN) and British
Approved Name (BAN) soon after its introduction.
The name sometimes referred to as a generic name
however this term is used to designate a chemical or
pharmacological class of drugs such as Sulphonamide ,
Penicillin.

7. CONT…
OFFICIAL NAMES: It is the name approved by the National
Pharmacopeia Commission and included in the official
book i.e. Pharmacopeia .
The official must be identical with approved name.

8. PROPRIETARY NAME
• It is the name given to a drug by the pharmaceutical firm
which sells the drug.
• Thus a single drug is sold under many proprietary names
by different firms .
• They are written with capital initial letter and are often
further distinguished by superscript R in circle .
• Clinicians usually described drugs by their proprietary
names.

9. EXAMPLE
PARACETAMOL
• CHEMICAL NAME: N-(4-hydroxyphenyl)acetamide.
• NON PROPRIETARY NAME:
Approved name: British Approved Name (BAN):Paracetamol
United States Approved Name (USAN): Acetamorphine
OFFICIAL NAME: Acetamorphine
• PROPRIETARY NAME: Pandol , Calpol Adol

10. ASPIRIN
• CHEMICAL NAME: Acetyl salicylic acid
• NON PROPRIEATRY NAME OR GENRIC NAME :
Aspirin
• PROPRIETARY NAME: Dispirin

11. THANKS!!!!