CHAPTER ONE
INTRODUCTION
BACKGROUND OF STUDY
A drug can be defined as any chemical solid, liquid or amorphous substance derived from plants, animals or mineral resources which is applied externally or internally to cause some desirable effects. Also, drug can be defined as a substance which by its chemical nature has an effect to open the body of higher nervous system (the mind) the effect of drug could be positive or negative.
POSITIVE EFFECTS OF DRUG
Drug when properly used or taking into a living organism, produces the desired result, and may modify one or more of its functional parts; it is usually prescribed by a medical practitioner. Such drugs or substances are either of vegetables, animals or mineral origin. They could be prepared for the human body that that produces the desired results into the treatment of diseases and ailment.
NEGATIVE EFFECTS OF DRUG (DRUG ABUSE)
The negative effect of drug is also referred to as drug abuse. Drug abuse is therefore defined as the excessive consumption of a drug by any individual. Drug abuse results when there is self injection or from the approved medical in a manner that deviates from the approved medical usage. Drug abuse is involved in the following: 1. Excessive use of drugs and use of unprescribed drugs. 2. Use of hard drugs.