Cnidium is annual herb, height leaf is alternate, ellipsoidal, 2-4 mm long, about 2 mm in diameter. Dorsal surface of mericarps
with five thin and longitudinal ridges, commissural surface flattened, with two brown and slightly raised longitudinal ribs.Pericarp lax and fragile, easily rubbed off, seed small, greyish-brown and oily. Odor, aromatic; taste, pungent, cool and numb.
Cnidium Monnieri extract osthole powder osthole may improve conditions including impotence, female infertility, vaginal itching,
and yeast infections. It often causes a deterioration of symptoms in men with chronic spermatorrhea and premature ejaculation.