Patient discussions
Concomitant use of antacids containing sodium bicarbonate or calcium carbonate reduces iron absorption.[116] H2 antagonists impair acid secretion throughout the entire time that the H2 antagonist is active.
Drugs and supplements that can interfere with iron absorption when given at the same time as iron supplements include colestyramine, colestipol, neomycin, fluoroquinolone antibiotics, tetracycline antibiotics, calcium, magnesium, manganese, and zinc.
Multivitamins often have insufficient iron to correct anaemia and may contain minerals which can interfere with iron absorption.
Iron can impair the absorption of fluoroquinolones and tetracyclines. It can also interfere with vitamin E activity.
Absorption is enhanced by ascorbate (found in orange juice or can be taken as a supplement) and meat, and inhibited by calcium, fibre, tea, coffee, and wine.[23]
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