M.Pharm, Shoolini University of Life Sciences,
Medicinal herbs constitute important source of drugs. Treatment of diseases with medicinal herbs is called phytothrepary. The study of chemistry of plant derived drugs is known as phytochemistry. Medicinal herbs have given us a number of important drugs, which are mainstays of treatment in synthetic system of medicine. Ayurveda, Siddha, Homeopathy and Herbalism are completely dependent on plants for formulations. Salicin, a glycoside isolated from Salix alba attracted the researchers in the 19th century and it provided us with most potent weapon, Acetyl-salicylic acid for killing pain. The article highlights the historical usage and pharmacogonosy of medicinal herbs containing salicin.