What is drug abuse? Give an example of a tranquillizer.

Explanation

### Step-by-Step Text Solution

1. **Definition of Drug Abuse**:
Drug abuse refers to the inappropriate use of drugs for non-medical purposes. This involves taking drugs in a manner that is not prescribed by a healthcare professional, often leading to negative consequences on physical, psychological, and social well-being.

2. **Characteristics of Drug Abuse**:
- **Non-therapeutic Use**: Drugs are used for purposes other than their intended medical use.
- **Excessive Consumption**: The quantity of drugs taken exceeds the normal clinical dosage, which can lead to impairment of physical, physiological, and psychological functions.
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