Ingredient Evidence

Cinnamon is a spice from the bark of Cinnamomum trees. Human studies suggest small changes in blood sugar and some cardiometabolic measures in some groups, but results are mixed and the National …

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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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