Bluebonnet Nutrition Chelated Magnesium features magnesium in a highly bioavailable chelated form. A vital mineral that plays a role in over 300 biochemical reactions in the human body, magnesium promotes cardiovascular health, bone development, muscle function and much more. Each serving delivers 200 mg of magnesium bisglycinate chelate. No milk, egg, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans, corn, yeast, gluten, barley, sugar or sodium.