GERD Channel
Topics & Medications
Quicklinks
Related Channels
Calcium Carbonate
Calcium carbonate is the least expensive type of calcium supplement currently available. The nutrient is important for maintaining strong bones and teeth. It can also be used as an antacid to relieve heartburn or indigestion by directly neutralizing stomach acid. Most people tolerate the supplement without problems, but belching, kidney stones, and constipation have been reported in some people taking this product.
Calcium carbonate supplements are among the most popular dietary supplements available. It is used as an antacid and as a calcium supplement. Among the various different types of calcium supplements, calcium carbonate is the least expensive.
(Click What Is Calcium Used For? for more information on what the mineral is used for.)
Calcium carbonate works for indigestion or heartburn by directly neutralizing stomach acid. It works as a dietary supplement by supplying the body with calcium.
Most of the calcium in the human body is stored in the bones and the teeth. While many people think of bones and teeth as permanent, unchanging structures, they are actually being constantly broken down and rebuilt. It is absolutely essential to keep a certain steady level of calcium in the blood. If blood calcium carbonate levels are too low, the body will break down bone and teeth to increase the blood calcium carbonate levels. If the blood levels are high, then the body uses the extra calcium carbonate to rebuild bone and teeth.
Calcium carbonate is very effective for some uses. However, many uses have only a little scientific evidence in their favor, and some have almost none at all (see Does Calcium Work? for more information).
Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD