calcium carbonate, Caltrate 600, Os-Cal 500, Tums Extra, Tums Chewy Delight, and Many Others (cont.)
Omudhome Ogbru, PharmD
Omudhome Ogbru, PharmD
Dr. Ogbru received his Doctorate in Pharmacy from the University of the Pacific School of Pharmacy in 1995. He completed a Pharmacy Practice Residency at the University of Arizona/University Medical Center in 1996. He was a Professor of Pharmacy Practice and a Regional Clerkship Coordinator for the University of the Pacific School of Pharmacy from 1996-99.
Medical and Pharmacy Editor:
PRESCRIBED FOR: Calcium-containing products are used as part of a regimen for preventing and treating osteoporosis in individuals with low levels of calcium in their diets. Calcium carbonate is also used as an antacid for treating minor stomach upset.
DRUG INTERACTIONS: Calcium can make it difficult for the body to absorb certain medications. Calcium products bind to quinolone (for example, ciprofloxacin) and tetracycline (for example, Sumycin) antibiotics in the intestine and can prevent their absorption into the body. To prevent this interaction, doses of quinolone and tetracycline antibiotics should be separated by three or more hours from doses of calcium.
Calcium carbonate-containing products reduce acidity in the stomach. The reduction of acid decreases the absorption of iron from the intestine. Therefore, doses of calcium and iron should be separated by a several hours.
Calcium products also bind to sodium polystyrene sulfonate (Kayexalate, a drug used to treat high levels of potassium) in the intestine and, therefore, may interfere with the action of Kayexalate. Doses of Kayexalate and calcium products should be separated by several hours.
NURSING MOTHERS: Calcium products appear in breast milk but are considered safe during breastfeeding.
Medically Reviewed by a Doctor on 7/31/2014
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