Preferred Nutrition Magnesium Complex provides 250 mg of magnesium from seven complementary forms, plus vitamin B6 and manganese, making it easier to absorb and use. This comprehensive formula helps maintain normal muscle function, including the heart muscle, and helps in bone development. The non-GMO, gluten-free tablets are suitable for vegetarians and vegans. Helps maintain normal muscle function, including the heart muscle Helps in tissue formation and in the development and maintenance of bones and teeth Helps maintain normal electrolyte balance Helps maintain the body’s ability to metabolize nutrients Helps in energy metabolism