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Milk or Dairy
Dairy products contain calcium, which is good for your bones and nervous system, but may affect how your digestive system absorbs medication.

Be careful...if you take certain types of antibiotics. Quinolone antibiotics (ciprofloxacin, levofloxacin, norfloxacin) and ofloxacin and tetracycline antibiotics (doxycycline, minocycline and tetracycline) may not be absorbed as well if you have recently ingested a calcium-rich food or beverage. Avoid taking these medications within two hours of consuming dairy products.

**Note: This is not a complete list. You should always ask your doctor if you should avoid any particular foods, drinks or supplements specific to your medication regimen.