well,actually its an excellent phosphate binder and is used mmedically for that purpose. its a cheap, effective antacid for the occassional overindulgence.
dark green vegetables such as Broccoli and Kale naturally contain quite a lot of calcium carbonate
regarding damage control i guess this paragraph gives the game away-Gentle on Your Stomach The Damage Control Master Formula's easy-to-swallow capsules are gentle on your stomach and present none of the gastric upset that can often accompany harsh tablets or "caplets". The finely powdered contents are naturally buffered (made non-acidic with minerals like magnesium and calcium) to assist with rapid dissolution and ease of absorption in the appropriate areas of your digestive system.