Heart, bone and nerve support supplement: contains one 200 count bottle of Nature Made Magnesium Oxide 250 mg Tablets for a 200-day supplyMagnesium 250mg is a dietary supplement that helps relax the body and supports muscle relaxation, nerve, heart and bone healthMagnesium is an essential mineral that is required for more than 300 enzymatic reactions in the bodyAdults take one Nature Made 250 mg Magnesium tablet daily with water and a mealThese Magnesium Oxide 250mg tablets are gluten free and contain no synthetic dyes and no artificial flavors#1 Pharmacist Recommended Vitamin & Supplement Brand*