http://www.thriveonline.com/health/osteo/seek.selfcare.html
here is a good article about calcium. It says that calcium is best absorbed
if taken in 250-500 mg amounts. I'm not sure where I read that the first
time, but this is a pretty reliable source. It also says don't take more
than 1000 per day. It is possible to get too much calcium.
-Bronwyn