St. John's Wort
Dosing InformationBecause St. John's wort is regulated as a dietary supplement, rather than a drug, less information is available about how to safely and effectively take it. The general dosing information available is based on clinical studies and years of experience with this supplement.
(Click St. John's Wort Dosage for more information.)
Side Effects of St. John's WortMany people believe that natural products, such as St. John's wort, do not have any side effects. However, many natural products cause side effects, some of which can be quite serious. St. John's wort can cause side effects such as:
- Dry mouth
- Insomnia (see St. John's Wort and Insomnia)
- Anxiety or agitation
- Sensitivity to the sun
- Sexual problems.
(Click St. John's Wort Side Effects to learn more, including potentially serious side effects that you should report immediately to your healthcare provider.)
Drug InteractionsThis supplement may interact with several medications (see St. John's Wort Drug Interactions). For many people, the risk of drug interactions due to St. John's wort is not worth the slight benefits that may be obtained from using the supplement.