Simplified Notes In Pharmacology
Introduction
Pharmacology is the science dealing with various aspects of drugs. The
word is derived from Greek words; Pharmacon- drug and logos- discourse
in.
Drug:
According to the World Health Organization Scientific definition (1966),
“Drug is any substance or product that is used or intended to be used to
modify or explore physiological systems or pathological states for the
benefit of the recipient.”
Categories of the drugs:
1. Non-prescription drugs: Safe drugs and can be sold over the counter
(OTCs) by the chemist without prescription. e.g. vitamins, antacids,
etc.
2. Prescription drugs: Drugs classified in various Schedules and Drug
acts. Should be used under medical supervision and to be dispensed
only on the order of registered medical practioner. e.g. antibiotics,
antihypertensive drugs, etc.
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