100 Mag-Tab®SR caplets: Each caplet of Mag-Tab®SR contains 84 mg of elemental magnesium L-lactate dihydrate. Four 84 mg Mag-Tab SR caplets daily contain 336 mg of elemental magnesium and will meet the USRDA range for the average adult female and male (300-350 mg daily). Patients with kidney disease should not take magnesium supplements without the advice and direct supervision of a physician.
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