Every time i have any iron, either supplement or food, i have diarrhea the next day. now, anytime having more extreme reaction after red meat?

Unusual but...: It's much more common to have constipation from iron supplements, but I see diarrhea listed as a rare side effect of Ferrous sulfate. I doubt you are reacting to EVERY food with iron as dozens of foods have iron- see http://tinyurl.com/yd6jv5lg Some people have difficulty digesting red meat; it may be due to lack of hydrochloric acid. You may do better with grass-fed meat. See my comment for more: