[RobinP]

Calcium citrate is the most biologically easily absorbed calcium. It can even be taken without food. Studies show that you can take up to 500mg-600mg at one shot. In fact, the absorption is increased with Calium citrate once you reach 500mg of dosing, as opposed to other forms of calcium, which have decreased absorption with higher doeses. Don't forget vit D and we all need at least 400mg or more of of it a day. Calerciferol or D3 is the type that is best absorbed. I take multivit. that has magnesium in it as well for bone health.

More on vit D from Becky's post:
<hr style="color: rgb(170, 135, 153);" size="1"> <!-- / icon and title --><!-- message --> D2 (the less desirable form) must be converted to D3 (for use in the body) by the liver. Most people are very efficient at the conversion but some are not. Also, the ability of the liver to convert is compromised with age so as we get older, we become less efficient at doing it. Both forms are good for you but you need much more of D2 if you are an inefficient converter (which most of us don't know what we are!!??)