UpCal D!
The ASMBS says we need 1500 to 2000 mg calcium citrate daily, so that would be three or four doses a day. We can only absorb about 500 mg at a time.
Please note: I AM NOT A DOCTOR. If you want medical advice, talk to your doctor. Whatever I post, there is probably some surgeon or other health care provider somewhere that disagrees with me. If you want to know what your surgeon thinks, then ask him or her. Check out my blog.