A plant-derived lubricant that keeps supplement powders from sticking to manufacturing equipment.
No. This myth comes from a misinterpreted study. You eat grams of stearic acid daily from food. The 5-20mg in supplements is nothing.
Chemically identical. Choose vegetable if you're vegan or prefer plant-derived.
Barely. About 0.5mg. Essentially nothing.
Click through to the studies bar for the evidence base.
See the dosing guide below.
Compare formats before buying.
Some ingredients build up over weeks. Others act fast.
The compound effect of consistent dosing.
Check the cautions section if you have a pre-existing condition.
Some ingredients you feel. Others just work in the background.
It works incredibly well at preventing sticking. Manufacturing would be much harder without it.
No scientific reason to. Some brands market 'magnesium stearate-free' at premium prices. Classic fear-based marketing.
Stearic acid from palm or coconut oil reacted with magnesium oxide.
Magnesium salt of stearic acid that forms a thin film between powder particles and metal surfaces, reducing friction during tablet compression. The fatty acid component provides lubrication.
Magnesium Stearate (Vegetable Source) has emerging evidence.
Stearic acid from palm/coconut oil
Stearic acid isolated from vegetable oils, reacted with magnesium oxide.
Magnesium Stearate (Vegetable Source) interacts with other supplements and meds. The analyzer flags interactions, dose mismatches, and timing collisions across your whole list.
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This information is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before starting any supplement regimen.