Description

The word drug is derived from the French word drogue, which means a dry herb. In a general way, a drug may be defined as a substance used in the prevention, diagnosis, treatment or cure of disease in man or other animals. According to WHO, a drug may be defined as any substance or product which is used or intended to be used for modifying or exploring physiological systems or pathological states for the benefit of the recipient and it is presumed that this refers to total benefit-physical, mental as well as economical. An ideal drug should satisfy the following requirements: