Active Iron Hard Gelatin Capsule has been clinically demonstrated to provide twofold absorption of iron sulfate. Its groundbreaking protein blend has been particularly engineered to be non-constipating, making it gentle enough to consume on an empty stomach while providing robust absorption when you need it the most. Active Iron targets the body's natural iron absorber, the DMT-1, resulting in twofold absorption of iron sulfate. Active Iron's protein mix helps to decrease iron-induced gastrointestinal irritation, making it gentle on the stomach.