This isn't about me, but my mum. She has recently been diagnosed with osteopenia, and has decided that she wants to switch to a vegan diet (yay!). But anyways, she also has recently learned that her vitamin D levels are low, and her doctor wants her on a drug like boniva or one of those other osteoperosis meds. Mum would rather take a holisitic approach and take suppliments and increase the amount of calcium and vitamin D in her diet. Does anyone have any suggestions on a particular D suppliment to take (like brand wise. I think she said she needs D2 and D3) or where to get them.  :-\