According to a USDA Agricultural Research Report, 7 out of 10 Americans are below the Dietary Reference Intake for Magnesium. Proper magnesium levels are required to help maintain good cardiovascular health, normal heart rhythms and proper muscle function. Slow-Mag Magnesium Chloride Tablets provide 143 mg of elemental magnesium and 238 mg of calcium - two vital minerals - in every dose. Slow-Mag Tablets are enteric-coated to help prevent stomach upset, and formulated with magnesium chloride for increased absorption versus magnesium oxide.Slow-Mag is the magnesium supplement that provides: Magnesium chloride for increased absorption versus magnesium oxide Enteric coating to help prevent stomach upset 143 mg of magnesium per serving (2 tablets) 238 mg of calcium per serving (2 tablets) Suggested Use: As a dietary supplement, take 2 tablets once or twice a day or as directed by your physician. UPC: 067618107606 Weight: 0.69 lbs