Acid-reducing drugs, such as Prilosec, can interfere with vitamin B12 absorption and likely other nutrients as well, according to Ronald Hunninghake, MD, medical director of the Bright Spot for Health clinic in Wichita, Kansas.
Oral antibiotics, especially broad-spectrum antibiotics, destroy beneficial gut bacteria that aid in digestion and protect against intestinal flus and food poisoning.When that happens, diarrhea is often an immediate consequence, and absorption of vitamins and minerals may be hindered for weeks-or until gut bacteria recover.
Oral contraceptives don't usually hurt the gut, but they do manipulate hormone levels and lower blood levels of B-complex vitamins, zinc, and manganese.Regular use of NSAIDs, says Hunninghake
, increases the risk of ulcers, which lead to problems with the absorption of other drugs and myriad nutrients.
"You don't absorb what you should, and you absorb what you're not supposed to," says Hunninghake