Which statement about iron and calcium interactions is correct?

• A. Iron and calcium interact; take calcium with iron for best absorption.
• B. Calcium can interfere with iron absorption; separate doses by at least two hours.
• C. Calcium and iron have no interaction; they can be taken together.
• D. Calcium increases iron absorption; take with iron.

Answer: (B)

Calcium can interfere with iron absorption in the gut. When both minerals are taken together, calcium may compete for absorption pathways and can form less soluble complexes, reducing how much iron enters the bloodstream. To avoid this interaction and maximize iron uptake, separate their doses by about two hours. That’s why this option is the best: it acknowledges the interference and provides a practical spacing strategy. Taking calcium with iron for best absorption isn’t supported, and the idea that there’s no interaction or that calcium increases iron absorption isn’t correct.