Blue cohosh

A chemical (caulosaponin) discovered in blue cohosh provokes strong uterine contractions. Caulosaponin, however, also narrows the arteries that supply blood to the heart. Blue cohosh has produced heart damage in laboratory animals and it is quite possible that it could cause damage in humans as well through an overdose.

Blue cohosh does not appear to be more hazardous than Pitocin, the standard drug to induce labor, which may also cause heart damage and other serious side effects.

Pitocin requires constant professional monitoring. Blue cohosh should also be used under strict medical supervision.

Indian researchers have discovered evidence that the American Indians may have been on the right track in using blue cohosh as a contraceptive. In animals, the herb inhibits ovulation, according to a report published in the Journal of Reproduction and Fertility.

European researchers have identified some antibiotic and immune-stimulating properties in blue cohosh. This possibly explains its use by Eclectic physicians for bladder and kidney infections. Blue cohosh also has anti-inflammatory activity, lending credence to its traditional use for arthritis.