HIGHEST POTENCY CALCIUM IN ONE TABLET! Alive Vitamins™ Calcium 500 + Magnesium 250 + D Looking for a One-A-Day Calcium with sufficient Calcium and Magnesium in the perfect ratio? Look no further! Take Alive Vitamins™ Calcium with 500mg and 250mg magnesium in one tablet plus D3. With the increasing number of baby boomers as seniors, Osteoporosis is a concerning issue. With added Magnesium and Vitamin D this balanced formula will maintain bones and teeth. With added Magnesium and Vitamin D, this balanced formula will maintain bones and teeth. Don’t neglect your Calcium as there are too many broken bones happening daily.