Cramp Bark, as its name suggests, is used to treat cramps and spasms of all types. The bark is antispasmodic, astringent, and sedative, especially in the uterus. Cramp bark is used to relieve menstrual cramps and spasms after childbirth and to prevent miscarriage. The herb is used in combinations to treat asthma and nervous tension.
American guelder-rose, Caprifoliaceae (family), common guelder-rose, cranberry tree, European cranberry bush, guelder rose, pembina, proanthocyanidins, snowball tree, Viburnum opulus , Viburnum opulus L., Viburnum prunifolium L., viopudial.