Which should not be given to patients receiving antibiotics?

Which should not be given to patients receiving antibiotics?

• A. Iron
• B. Vitamin C
• C. Calcium carbonate
• D. Folic acid

Answer: (A)

Iron supplements should not be given during antibiotic therapy because iron can bind to many antibiotics in the gut, forming insoluble complexes that are poorly absorbed. This reduces the amount of antibiotic that enters the bloodstream and reaches the infection, which can lower its effectiveness and increase the risk of treatment failure or resistance. The interaction is most notable with drugs like tetracyclines and fluoroquinolones, though it can affect other antibiotics as well. If iron is needed, space the dosing from antibiotics by several hours (for example, a couple of hours before or a few hours after) and follow the clinician’s guidance. Vitamin C and folic acid generally don’t cause the same broad absorption issues with antibiotics, while calcium-containing products can interfere with some antibiotics too, but the strongest and most consistent issue to avoid is iron.

Iron supplements should not be given during antibiotic therapy because iron can bind to many antibiotics in the gut, forming insoluble complexes that are poorly absorbed. This reduces the amount of antibiotic that enters the bloodstream and reaches the infection, which can lower its effectiveness and increase the risk of treatment failure or resistance. The interaction is most notable with drugs like tetracyclines and fluoroquinolones, though it can affect other antibiotics as well. If iron is needed, space the dosing from antibiotics by several hours (for example, a couple of hours before or a few hours after) and follow the clinician’s guidance. Vitamin C and folic acid generally don’t cause the same broad absorption issues with antibiotics, while calcium-containing products can interfere with some antibiotics too, but the strongest and most consistent issue to avoid is iron.