So as the name suggests, Cramp bark is used for relieving cramps, including muscle spasms, menstrual cramps, and cramps during pregnancy. Cramp bark is also used as a kidney stimulant for urinary conditions that involve pain or spasms.
Because of its calming effect on the nervous system, cramp bark is sometimes also used as a mild sedative for nervous tension. One of the most popular uses for cramp bark is to provide relief from monthly menstrual pain.