Yes, easily absorbed calcium citrate not the calcium bicarbonate crap you find in walmart vitamins. You also need vitamin D and magnesium to properly absorb it. Calcium is needed for proper muscle memory. If you don't have enough of it the little flap in your stomach that keeps acid from getting into your esophagus will not fully close and that's why you have heart burn. Also, if you sometimes get twitches/ticks in your face or muscle spasms in your arms and legs it will fix those problems as well.