HistDAO (60 Tablets) by Xymogen is a dietary supplement in tablet form.

• Manufacturer 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.
• Ingredients: Serving Size: 1 Tablet 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.