Have you thought about taking the Viactiv soft calcium chews?
They are and I take this directly off the web site:
Q. How much calcium carbonate is contained in
one VIACTIV® Calcium Soft Chew?
A. Each VIACTIV® Calcium Soft Chew contains 500 mg of
elemental calcium from 1,250 mg of calcium carbonate.
Q. How well absorbed is the calcium in VIACTIV®
Calcium Soft Chews?
A. Calcium carbonate, nature's most concentrated source of
calcium, delivers 500 mg of elemental calcium in each
VIACTIV® Calcium Soft Chew. The calcium in VIACTIV®
has been clinically demonstrated to be absorbed as well
as the calcium from low-fat (1%) milk.
And now they have a multi vit chew as well.
I know they are supposta be for women, but these things taste pretty darn good, and they are so easy to take, just chew them like a piece of candy then swallow.
I took then for a while, but then quit since I got a kidney stone from too much calcium, lol. Go figure!
Oh, and you can get then at Wally World.