Analgesic These are the drugs which are used for relieving pain. Codeine is an important analgesic.
Tranquilizer The drugs which act on the central nervous system and help in reducing anxiety are called tranquilizers. Phenalzine is a tranquilizer.
Antibiotic Antibiotics are defined as chemical substances produced by microorganisms that can inhibit the growth or even destroy other micro-organisms. Protonsil is an antibiotic.
Antíhistamine These drugs are also called as anti-allergic drug and are used to treat allergy. Terfenadine is an antihistamine.