This product contains 100 mg of magnesium in the easily absorbable, organic form of magnesium citrate. Many products with magnesium are in tablet form because they fit more. And those tablets are often large because magnesium takes up a lot of space. Not everyone finds such large tablets equally pleasant to use. Vitals therefore supplies this product in the form of a capsule that is easier to swallow. If desired, the capsule can also be opened to mix the contents with something.