Magnesium stearate is formed by bonding mangesium ions to stearic acid. It is used in the the manufacturing process of tablets as a lubricant, making the process quicker (and therefore cheaper). There has been one study that linked magnesium stearate to immunosuprression, but the jury is still out.
Stearic acid is normally taken from beef/lamb fat but can also be derived from vegetable sources - useful if supplement manufacturers want to label their ingredients as 'vegetarian'.
Thank you for your reply, however, it did not cover my question regarding the vegetable stearate. I am very aware of the possible dangers of magnesium stearate but could find little information regarding vegetable stearate. Does it too have potential negative side effects? Any studies that you may be aware of on this one?
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