If this dietary supplement has been ordered for you by your health care professional and you will be taking it in large doses or for a long time, your health care professional should check your progress at regular visits. This is to make sure the calcium is working properly and does not cause unwanted effects.
Do not take calcium supplements within 1 to 2 hours of taking other medicine by mouth. To do so may keep the other medicine from working properly.
Unless you are otherwise directed by your health care professional, to make sure that calcium is used properly by your body:
- Do not take other medicines or dietary supplements containing large amounts of calcium, phosphates, magnesium, or vitamin D unless your health care professional has told you to do so or approved.
- Do not take calcium supplements within 1 to 2 hours of eating large amounts of fiber-containing foods, such as bran and whole-grain cereals or breads, especially if you are being treated for hypocalcemia (not enough calcium in your blood).
- Do not drink large amounts of alcohol or caffeine-containing beverages (usually more than 8 cups of coffee a day), or use tobacco.
Some calcium carbonate tablets have been shown to break up too slowly in the stomach to be properly absorbed into the body. If the calcium carbonate tablets you purchase are not specifically labeled as being "USP," check with your pharmacist. He or she may be able to help you determine which tablets are best.