Punarnava / Boerhaavia
Piper longum or pippali as is commonly called is of South Asian origin and is found almost all over India. It is a slender aromatic climber with perennial woody roots. Piper Longum is said to has diverse pharmacological uses including nerve depressant and antagonistic effect on electro-shock and chemo-shock seizures as well as muscular in-coordination.
Odor is aromatic and the taste is highly pungent. Pepper contains volatile oil, the crystalline alkaloids: piperine, piperidine and piperettine, and a resin. The alcoholic extract taken from the pippali or Long pepper contains the alkaloid piperine (about 6%), which is slightly higher than that in black pepper.