There are numerous alleged uses of St. John's wort. Benefits of this herbal supplement include treating depression, obsessive-compulsive disorder, menopause symptoms, and migraines. However, some of these uses have been shown to be more credible than others. St. John's wort may help increase the level of serotonin in the brain, which may help relieve symptoms of depression in a similar way to SSRI antidepressants.
St. John's wort (Hypericum perforatum) is a yellow flowering plant that is native to Europe. It is also a popular dietary supplement. St. John's wort supplements are often claimed to help treat many different conditions, such as:
Some of these alleged St. John's wort benefits are more credible than others (see Does St. John's Wort Work? for more information). As with many supplements, claims for the benefits of St. John's wort are sometimes exaggerated, and these claims must be evaluated critically. Natural products should not be used carelessly, as many can be quite toxic (for instance, many poisons are natural).
In addition, St. John's wort can cause negative interactions with many medications. For many people, the risks due to St. John's wort drug interactions may outweigh any possible benefits the supplement provides.
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