HistDAO provides a concentrated source of diamine oxidase (DAO)—the main enzyme responsible for the degradation of ingested histamine. This formula delivers the clinically researched dose of DAO in an easy-to-swallow, gastro-resistant mini-tablet, which is essential for releasing DAO in the small intestine, where it breaks down food-derived histamine. HistDAO does not manage or address antibody-related or IgE-related food allergies.

Dietary considerations

Gluten free

Dairy free

Soy free

Egg free

Tree nut free

Fish free

Peanut free

Shellfish free

Wheat free

Corn free

Yeast free

Suggested use

Take one tablet no more than 15 minutes before the consumption of histamine-rich foods, or take as directed by your healthcare professional.

Serving Size: 1 Tablet

Servings per container: 60

Amount Per Serving 

Pig Kidney Extract … 4.2mg
(providing 20,000 HDU diamine oxidase (DAO))

Other Ingredients

Microcrystalline cellulose, hydroxypropyl cellulose, coating (ethylcellulose, sodium alginate, hydroxypropyl methylcellulose, medium-chain triglycerides, stearic acid, oleic acid, and microcrystalline cellulose), sodium starch glycolate, and magnesium stearate. 

Formulated to Exclude: 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.