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Passionflower is a climbing vine that is native to the southeastern United States and Central and South America.
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This herb is promoted as a dietary supplement for anxiety, sleep problems, and other conditions.
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Passionflower’s effects on health conditions have not been extensively studied.
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A small amount of research suggests that passionflower might help to reduce nonspecific anxiety and anxiety before a surgical or dental procedure, but conclusions are not definite.
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There’s not enough evidence to say whether passionflower is helpful for any other health conditions.
What Do We Know About Safety?
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Up to 800 mg daily of a passionflower extract has been used with apparent safety in studies lasting up to 8 weeks, but it may cause side effects such as drowsiness and confusion in some people.
- Whether it’s safe to use passionflower topically (on the skin) is not known.
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