Calcium may interact with some medications and foods. First and foremost, you should follow the instructions of your doctor or pharmacist on how to take your calcium. Generally it is recommended that calcium supplements not be taken within one to two hours of another medication dose because it may impede the effects of the medication. Taking medications or supplements that have large amounts of calcium, magnesium, phosphates, or vitamin D may not be safe. Taking calcium with some medications can decrease the effectiveness of the medication, decrease calcium absorption, increase calcium levels dangerously, or even cause lung or kidney problems. Calcium is known to interact with the following medications:
- bisphosphonates
- H2 blockers
- proton pump inhibitors (PPIs)
- fluoroquinolone antibiotics
- tetracycline antibiotics
- thiazide and thiazide-like diuretics
- ceftriaxone
- calcipotriene
- levothyroxine
- sotalol
Don't take calcium with large quantities of fiber-rich foods. Take the supplement one to two hours before or after you eat fiber. You shouldn't drink large quantities of caffeine (over eight cups of coffee in a day) or alcohol, with calcium, and you shouldn't smoke tobacco.
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.