Calcium Citrate Malate is the most absoroable form of calcium that is the easiest on the stomach.... You have to take more pills with it than with calcium carbonate but it will absorbe a lot better than the carbonate plus you don't have to worry about it only partial breaking down like the carbonate....
I take the GNC Calcimate Plus™ 800
As a dietary supplement, take two tablets at breakfast and two tablets at dinner for a total of four tablets daily.
Supplement Facts
Serving Size 4 Tablets
Servings Per Container 30
Amount Per Serving % DV
Vitamin D (as Ergocalciferol) 200.00 IU 50%
Calcium (as Calcium Citrate Malate) 800.00 mg 80%
Magnesium (as Magnesium Oxide) 100.00 mg 25%
Potassium (as Potassium Chloride) 99.00 mg 3%
** Daily Value (DV) not established
Other Ingredients: Cellulose, Vegetable Acetoglycerides, Titanium Dioxide (Natural Mineral Whitener)
No Artificial Color, No Artificial Flavors, No Starch, No Sugar, Sodium Free, No Preservatives, No Wheat, No Gluten, No Corn, Yeast Free, No Soy, No Dairy
Storage Instructions: Store in a cool dry place.
Warning: After opening, keep tightly closed in refrigerator or other cool place.