Dietary Supplement. Premium quality. Citrate blend. Certified potency. Health through the power of nature, that's what it means to trust the leaf. Magnesium mediates proper muscle function (including the heart) and is essential for cellular production of protein & ATP. Our magnesium is tested and produced to superior quality standards. Gluten free. No sugar, salt, yeast, wheat, corn, soy, dairy products, artificial colors, flavors or preservatives. Question? Call 1-800-9Nature/naturesway.com. (This statement has not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.)