What ia s Drug?

Introduction:

Drug may be a Chemical or biological agent that alters the body normal physiology. It is use for prevention, cure, diagnosis and treatment for a particular pathological condition.

General classification:
Briefly drug can be classified as:

•  Autonomic drugs
• Cardio vascular drugs
• CNS acting drugs
• Drugs to treat inflamation
• Chemotherapeutics drugs
• Endocrine drugs
• Drugs that act on smooth muscles

These are the main general classes. These classes are further divided into several sub-classes.