My apologies Ido - it is sometimes hard to keep track of Radar's meds and the advice he gets from different doctors. I thought the doctor had told him to take it but looking back at previous threads, the worry was that he might be taking too much!
Radar, too much calcium is not the same as taking the right amount. You need some calcium for your bones to stay healthy but if you try to have a reasonable diet (which I know you tend to struggle with) then you shouldn't need supplements. The research about calcium was about people who take in a lot of it.