Excessive antacid use in the short-term may indicate an underlying disorder that needs different care. The long-term, heavy use of any antacid can produce medical problems and should not be done without a physician's input. Most antacids produce only minor side effects, especially if they are used infrequently. Minor side effects are usually relieved by reducing the dose or frequency. For major side effects, contact the physician immediately.
Calcium carbonate is a good antacid and provides calcium, which is desirable.
Adults need 1500 mg a day and post menopausal females even more. Unless you drink a quart of milk a day, you likely do not get enough calcium from your food. However, for calcium alone, it is best to use the inexpensive calcium carbonate by itself. Constipation can often be corrected by a high fiber diet. Patients with hormone disorders of the parathyroid glands, those on kidney dialysis or who have any calcium problem should discuss its use with the physician.