Ingredient

Magnesium Steartate

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Source
Unknown
Not yet classified by editors
Allergen
No
Role in food
Manufacturers use magnesium stearate as a lubricant and anti-caking agent. It helps prevent ingredients …

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.

Products containing Magnesium Steartate

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Last updated: September 28, 2026

Note: This site presents label data from USDA FoodData Central for general information. It is not medical advice. Check the package label; formulations change.