Various Sources of Drugs
Drugs are obtained from various sources: Plants: Plants contain biologically active substances and are the oldest source of drugs. Medicinal plants have been used for centuries in traditional systems of medicine across the world, including opium, belladonna, ephedra, cinchona, curare, foxglove, sarpagandha, and qinghaosu. Plant-derived active ingredients fall into several categories, including: a. Alkaloids: alkaline…