Herbal treatment for anxiety: Is it effective?

Several herbal remedies have been studied as a treatment for anxiety, including kava, passionflower, valerian and theanine.

Kava appears to reduce anxiety, but more studies are needed to make sure that it's safe.

Several countries have banned the sale of kava based on reports of liver damage. The Food and Drug Administration issued warnings about kava in 2002, but hasn't banned the sale of kava in the United States. In people without underlying liver problems, kava seems to be safe for up to six months, when taken at the recommended dosages. However, more studies are needed to be certain of kava's possible potential side effects.

Passionflower, valerian and theanine also may reduce anxiety, but they probably don't work as well as kava. These herbs appear to be safe, with few reported side effects. As with kava, more research is needed to understand the risks and benefits of these herbal supplements.

If you're considering taking any herbal supplement as a treatment for anxiety, talk to your doctor first. If you have liver problems or you take other medications, it's especially important that you talk to your doctor before you try kava.

Make an appointment to see your doctor if your anxiety is interfering with daily activities. More serious forms of anxiety generally need medical treatment or psychological counseling (psychotherapy) for symptoms to improve.