» Supports Healthy Degradation of Food-Derived Histamine* » Enhances the Presence of Diamine Oxidase in the Digestive Tract* HistDAOTM 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 tablets are teeny tiny. They’re about half the size of the round advil tablets.