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Glossary

Supplements

Popular supplements and what the evidence does and doesn't show.

Updated

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B12 injectionsSupplementsVitamin B12 shots treat B12 deficiency; they are often sold for energy and weight loss, but they have not been shown to…BerberineSupplementsBerberine is a plant compound sold as a supplement and nicknamed "nature's Ozempic" online, but evidence for weight…

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Chromium picolinateSupplementsChromium picolinate is a mineral supplement marketed to curb cravings and support blood sugar, but studies show little…

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Glucomannan and fiber supplementsSupplementsGlucomannan is a soluble fiber from konjac root that swells with water and is sold for fullness; its effect on weight…Green tea extractSupplementsGreen tea extract is a concentrated supplement of tea catechins such as EGCG, sold for fat burning; its weight effect…

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Lipotropic injections (MIC shots)SupplementsLipotropic or MIC injections combine methionine, inositol and choline, often with B12, and are marketed to burn fat…

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NAD+ injectionsSupplementsNAD+ injections and IV drips are sold by clinics for energy, aging and weight loss, but no NAD+ injection is…