Crampeze Capsules Contain Viburnum Opulus traditionally used in western herbal medicine to help relieve: muscle cramps, mild muscle spasms & twitches. Provides Magnesium supplementation. Crampeze Capsules Contains: Viburnum Opulus (Cramp Bark) traditionally used in western herbal medicine to help relieve muscle cramps and mild muscle spasms and twitches, Viburnum Opulus (Cramp bark) traditionally used in western herbal medicine as an antispasmodic and to maintain general health and well being. Magnesium to support energy production and maintain muscle function. Ginko Biloba to support blood circilation to the peripheral areas of the body (legs, hands and feet). Ginkgo Biloba that acts as an antioxidant, reducing free radicals formed in the body.