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HistDAO – 60 tablets


  • Used for digestion support, this enzyme has been clinically tested and found to break down food-derived histamine in the digestive tract.
  • Enhances the presence of diamine oxidase enzyme in the digestive tract. DAO is not absorbed and does not have systemic activity.
  • This enzyme encompasses our immune support, digestive health and gastrointestinal support categories.
  • DAO supplements do not contain Wheat, gluten, corn, yeast, soy, dairy products, fish, shellfish, peanuts, tree nuts, egg, sesame, ingredients derived from genetically modified organisms (GMOs), artificial colors, and artificial sweeteners.


Serving Size: 1 tablet

Servings Per Container: 60