No: Zantac (ranitidine) does not cause high ferritin. I assume that your son has been on zantac (ranitidine) for gerd. Gerd does not cause high ferritin either. Ferritin does go up with infections or inflammations. It goes down when they subside. Ask your pediatrician reasons for testing serum ferritin, because it is not something we do routinely. If it is very abnormal, then you need the doctor anyway..
Answered 9/28/2016
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