This listing is for (1) Bottle. Nature's Bounty Magnesium Oxide High Potency Tablets feature magnesium, which works with ATP to produce the energy needed for most reactions in the body and supports glucose metabolism. The diets of most Americans do not provide the recommended amounts of magnesium. Magnesium plays an essential role in maintaining proper bone mineralization and supports healthy muscle contractions and nerve impulses. High-potency Promotes muscle and bone health Vital to the formation of blood cells Release of energy from cells Coated for easy swallowing