She went through this about a year and half ago after taking 65 mg of ferrous sulfate 3x per day. At that time, she began getting chronic diarrhea
and had stomach pain. They stopped the
iron and put her on 3 different probiotics, as well as a rice drink. It worked very well, but eventually the iron deficiency came back, and they put her on an iron supplement called Chromagen, which also worked very well as far as bring her hemoglobin and ferriten levels up.