Pharmacodynamics
Pharmacodynamics - Defined as the study of the effects of drugs on the normal physiological functions of the body
A. Agonist - A drug that produces such a specific action and promotes the desired result
B. Antagonist - A drug that attaches itself to the receptor, preventing the agonist from acting
1. Used to counteract the effects of other drugs, such as sedatives and analgesics
2. Examples – Flumazenil (Romazicon) and aloxone (Narcan)