)'Indian ginseng') as a tonic (adaptogen) in Ayurvedic medicine parallels the use of "Nicandra" as an adaptogen in traditional Tibetan medicine (see above, under 'Uses') and is accounted for by withanolide content.Also present in "Nicandra" are calystegines, a new group of polyhydroxy alkaloids with a nortropane skeleton and named for the bindweed genus "Calystegia" (Convolvulaceae).