Non-GMO 100% Vegan Dietary Supplement Enhanced Absorption 400 mg Per Serving Lab VerifiedDiscussion: Magnesium Citrate is a specially-chelated form of Magnesium using citric acid. Minerals bonded with citric acid are specifically formulated for people with low stomach acid and are intended to improve mineral bioavailability. Magnesium participates in numerous enzymatic reactions in the body and is intended to provide nutritive support for normal, healthy heart, muscle, nerve and circulatory function.