I don't know much about calcium, but I know Randy calcium. Last time Grandma was discharged from the hospital with a calf fracture, the doctor said that the old man had serious calcium loss, brittle bones and easy fracture, so he brought Randy calcium. Wen Lan calcium contains 500 mg of calcium per tablet, and vitamin D3200 international units, one calcium and two supplements, with good absorption and good effect. Now, this 70-year-old woman is delicious and her bones are quite strong. Always tell her partner Randy calcium is good.