Allergy Research Magnesium Citrate provides Magnesium in a very digestible form. Magnesium is a cofactor for some 300 enzymes in the body, and acts in unison with calcium to support cell, tissue, and organ functions. Magnesium may also contribute significantly to bone formation and mineralization. Every batch is tested to ensure the absence of heavy metals and other contaminants.Suggested use: As a dietary supplement, 1 capsule one to three times daily between meals, or as directed by a healthcare practitioner. Amount per serving:Serving Size; 1 vegetable capsuleServings per container; 90 Ingredients: Magnesium (as Magnesium Citrate); 170 mg Other ingredients: Hydroxypropyl methylcellulose, magnesium stearate, silicon dioxide. Caution:High doses of magnesium may have a laxative effect.Contraindicated with use of aluminum containing drugs.This nutrient is of the highest quality and purity obtainable, free of all common allergens (antigens), and does not contain preservatives, diluents, or artificial additives.Keep in a cool, dry place, tightly capped.