Black Haw Bark

Viburnum prunifolium 

Black haw is closely related to cramp bark, and shares similar properties. Its relaxing effects have a particularly strong action on the uterus, helping to relieve painful menstruation, false labor pains and contractions, and contractions after birth. For these applications, it should be used with the guidance of a qualified practitioner. Black haw’s strong anti-spasmodic properties are useful for rheumatic and arthritic complaints, tension, muscle spasms, and asthma. Because it can relax the peripheral blood vessels, it may help to reduce blood pressure. Black haw is also calming, particularly to those whose emotions manifest as physical tension.