Ingredient Evidence

Panax ginseng (Asian or Korean ginseng) may help a little with some things, but you should not expect a big payoff. It is a root used in traditional Chinese medicine, and the better-supported results …

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Apple cider vinegar (ACV) is apple juice that has been fermented twice, and acetic acid is its main active ingredient, according to Cleveland Clinic. In human trials lasting 4 to 12 weeks, daily ACV …

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Ginkgo biloba is a leaf extract from the ginkgo tree, sold as a supplement for memory and "brain health." The U.S. National Center for Complementary and Integrative Health (NCCIH) says there is no …

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Calcium is the most abundant mineral in your body, and your bones and teeth depend on it. Human studies agree that you need enough of it. They do not agree that adding supplements helps most people: a …

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Berberine is a compound found in plants such as goldenseal, barberry and Oregon grape. Human trials and reviews link it to modest drops in blood sugar and inflammation markers, but the studies are …

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L-arginine is an amino acid studied for possible effects on blood pressure and other health outcomes. Human studies are small to moderate in size. They show a modest blood pressure drop in a handful …

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