Multivitamins, or other products containing iron or zinc, antacids or sucralfate should not be administered concomitantly with, or within 2 hours of, the administration of norfloxacin, because they may interfere with absorption resulting in lower serum and urine levels of norfloxacin.
<Multivitamins, advise, norfloxacin>, <iron, advise, norfloxacin>, <zinc, advise, norfloxacin>, <antacids, advise, norfloxacin>, <sucralfate, advise, norfloxacin>