Magnesium Steartate
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What it is
Magnesium stearate is a salt made from magnesium and stearic acid. Stearic acid is a fatty acid that can come from animal fats or vegetable oils. It is manufactured by reacting stearic acid with magnesium oxide or magnesium hydroxide.
Why it's used
Manufacturers use magnesium stearate as a lubricant and anti-caking agent. It helps prevent ingredients from sticking together, especially in powdered supplements and processed foods like candy. This ensures a smooth texture and consistent product.
Health notes
Magnesium stearate is generally recognized as safe (GRAS) by the FDA for use in food. It is used in very small amounts, and the body typically processes it without issue. International bodies like JECFA have evaluated it. Some online discussions raise concerns about potential immune system effects or gut health impacts, but these claims are not widely supported by scientific consensus or regulatory reviews at typical consumption levels.
Allergen info
Magnesium stearate is not derived from any of the 9 FDA major allergens. It does not contain gluten.