Here's another good article on calcium:
Calcium
After taking stock of how much milk, yogurt, spinach (Wah! 'til recently), etc I eat - I'm now only taking 500mg each day; usually after lunch. I can't take it in the morning because it messes with my thyroid meds.
Someone asked about vitamins pills - I take 1 Z-Bec tab a day. It was recommended to me on a Rosacea b-board.