Examples: Brompheniramine (Dimetapp) and terfenadine (Seldane). (iii) Neurologically Active Drugs: Drugs which have a neurological effect i.e. affects the message transfer mechanism from nerve to receptor. They are classified in different types: a. What is a tranquilizer drug? Tranquilizer, also spelled Tranquillizer, drug that is used to reduce anxiety, fear,Read More →