Drug class

 Drug class.

A drug class is a set of medications and other compounds that have similar chemical structures, the same mechanism of action, a related mode of action, and/or are used to treat the same disease. In several dominant drug classification systems, these four types of classifications form a hierarch.

Drugs are being classified on the basis of:Chemical nature of drug: For example, glycoside, alkaloid, steroid. Symptoms or diseases in which they are used: For example, anti-hypertensive, anti-malarial, anti-tubercular, or anti-epileptic agents.