Allergy or Intolerance

While the symptoms of Histamine Intolerance (HIT) may mimic allergic reactions, HIT is not a classical food allergy. Rather, research suggests that histamine intolerance is mediated by a deficiency in levels and/or activity of the Diamine Oxidase enzyme.

Histamine Intolerance Chart


Symptoms of Histamine Intolerance

  • Vasodilation (flushing/reddening)
  • Hypotension/Tachycardia
  • Stuffy, Runny Nose/Sneezing
  • Swelling or red, watery eyes
  • Headache or Migraine
  • Diarrhea, cramps, bloating
  • Feelings of anxiety
  • Urticaria (hives)