Kava
(Piper methysticum) is an herbal supplement often used to treat
anxiety, stress,
insomnia, and menopausal symptoms. It is a pepper-like plant native to the South Pacific islands, where it is used to prepare a traditional beverage.
(Click Benefits of Kava for more information on what it is used for, including additional uses.)
It is not exactly clear how it works. There are several different theories involving numerous different brain chemicals which attempt to explain how it works. It seems to have the following properties:
- Anti-anxiety properties
- Sedative properties
- Anti-seizure properties
- Local anesthetic properties
- Anti-spasm properties
- Anti-inflammatory properties
- Analgesic (pain-relieving) properties.
There is some evidence that kava may be effective for treating anxiety, including anxiety associated with
menopause. It may also be helpful in preventing or reducing withdrawal symptoms from benzodiazepines (certain medications used to treat anxiety, insomnia, and
seizures).
The safe and effective dose for any use has not yet been established.
Many people believe that natural products, such as kava, have no side effects. However, many natural products cause side effects, some of which can be quite serious. This supplement can cause side effects, such as:
- Severe liver damage
- Stomach upset
- Dizziness
- Drowsiness
- Abnormal muscle movements or spasms
- Dry, scaly, yellowed skin.
(Click Kava Side Effects to learn more, including potentially serious side effects that you should report immediately to your healthcare provider.)
At this time, it does not appear to be safe, due to concerns about liver toxicity. Some people may be more likely than others to experience problems due to the supplement. You may be at high risk of dangerous side effects if you:
Make sure to tell your healthcare provider about all other medicines you are taking, including prescription and non-prescription medicines, vitamins, and herbal supplements.
(Click Kava Safety for more information, including any available warnings and precautions.)
What If I Take a Kava Overdose?
It is not known exactly what to expect from an overdose, although it is reasonable to expect that any of the usual
kava side effects could occur (but perhaps more severely).
If you think you may have taken too much, seek medical attention immediately.
Refer to the label of your individual product for information on how to best store kava. Keep kava and all other medications or supplements out of the reach of children.
