Many women say hot flashes and night sweats are the worst menopause symptoms. They can steal your sleep and wreak havoc on your waking hours, too. The sudden heat, which usually lasts from 30 seconds to 10 minutes, can make your heart pound, leave you red in the face and chest, and wake you up drenched.
If you want relief, "hormone therapy is the most effective treatment," says JoAnn E. Manson, MD, a professor at Harvard Medical School.
Hot flashes and other menopause symptoms happen when your...
Black cohosh is widely used in the United States, Australia, and Germany. The German government has approved it as a prescription alternative to hormone therapy. In the U.S., black cohosh is available without a prescription. Be sure to talk to your doctor before you take it.
You can buy black cohosh as a standardized extract in 20 mg pill form (such as Remifemin), which is taken twice a day. Root, extract, and tincture forms are also available in health food stores.
When black cohosh is used at regular doses, its only known side effect is occasional stomach discomfort.1 But black cohosh may have risks that are not yet known, including possible effects on liver function. More research needs to be done before experts can recommend it for long-term use.
Is it effective?
Studies on black cohosh have had mixed results. Some studies have shown that black cohosh can relieve menopause symptoms such as hot flashes.2 But other studies have shown that black cohosh does not relieve symptoms.
These mixed results may mean that black cohosh can relieve symptoms in some women, but does not relieve symptoms in others. Or the different results may be because different preparations were used in the studies.
Large, long-term studies have not yet been done to confirm whether long-term use of black cohosh is safe. Because black cohosh has benefits somewhat like estrogen therapy, it may also have some risks like those of estrogen.
Experts do not know for sure if black cohosh causes liver problems. But they have determined that black cohosh products should be labeled with a statement of caution. Stop using black cohosh if you notice that you are weak or more tired than usual, you lose your appetite, or your skin or the whites of your eyes are yellowing. Call your doctor because these symptoms may mean you have liver damage.3