Nature Made Extra Strength Magnesium Oxide 400 mg Softgels are a Magnesium supplement for men and women that helps support nerve health, bone health and heart health. Sourced from high-quality ingredients, this Magnesium supplement is gluten free and has no synthetic dyes, no artificial flavors, and no preservatives. These Nature Made Extra Strength Magnesium 400 mg softgels also support muscle relaxation. These Magnesium softgels come in an extra strength dose. Magnesium is an essential mineral that plays a key role in many bodily functions, yet over half of U.S. adults are not getting enough Magnesium from their diet (1). This Nature Made Magnesium Oxide 400mg dietary supplement can help people meet their nutritional needs. Adults take one of these 400 mg Magnesium Oxide softgels daily with water and a meal. Do not exceed one softgel daily; product may cause gastrointestinal disturbance. Nature Made Magnesium supplements are quality you can trust. (1) Reider, C.A.; Chung, R.-Y.; Devarshi, P.P.; Grant, R.W.; Hazels Mitmesser, S.