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Caltrate is a brand name calcium supplement sold by Pfizer Consumer Healthcare (Formerly Wyeth sold in 2009) and in Japan by Hisamitsu Pharmaceutical. The Caltrate brand is supplied in many different formulas; calcium carbonate (NOT calcium citrate) is the common ingredient serving as the calcium supplement source.[1] Caltrate contains 600 mg of calcium carbonate as opposed to 200 mg in a typical multivitamin product. Caltrate Plus also contains 800 IU of vitamin D (cholecalciferol), 20 mcg vitamin K1, 50 mg magnesium, 7.5 mg zinc oxide, 1 mg copper, and 1.8 mg of manganese (II) sulfate monohydrate.[2]
