Magnesium Bisglycinate from Designs For Sport contains highly absorbable magnesium with each capsule providing 150 mg of elemental magnesium that helps support normal muscle function. Designs For Sport’s Magnesium Bisglycinate is unlikely to cause unfavourable gastrointestinal (GI) symptoms associated with magnesium supplementation due to the very stable chelate formed between two glycine molecules and each magnesium ion via a patented process.