#1 Pharmacist Recommended Vitamin and Supplement Brand Dietary Supplement Usp Verified 250 mg Per Serving Value Size Absorbs Better Due to Citrate Form Supports Muscle Relaxation, Nerve, Heart and Bone Health No Synthetic Dyes - Colors Derived From Natural Sources No Artificial Flavors Gluten Free Magnesium is one impressive mineral! It supports essential nerve, muscle and heart function, essential bone and teeth health, and helps relax the body. Each serving of 2 softgels provides 250 mg of Magnesium Citrate, which absorbs better due to its citrate form. Usp has tested and verified ingredients, potency, and manufacturing process. Usp sets official standards for dietary supplements. Citrate form is more highly absorbable form than Magnesium Oxide.