How Calcium interacts with iron

Interaction type: Interactions

Interaction rating: Proven

Calcium can inhibit the absorption of iron. This interaction may alter the effects of iron and possibly the dose needed for treatment. (1)


  1. View Abstract: Hallberg L, Rossander-Hulthen L, Brune M, et al. Inhibition of haem-iron absorption in man by calcium. Br J Nutr. Mar1993;69(2):533-40.