Diamine oxidase is an enzyme that helps break down excess histamine in your body. More research is needed to establish effectiveness and dosage, though current studies report no adverse effects.

A low-histamine diet can improve allergy-like symptoms in people with histamine intolerance. The diet limits fermented foods, fatty fish, and citrus fruits.

Histamine intolerance (HIT) is a trending buzzword within the realm of functional nutrition and integrative health. Although mainstream medicine has not officially accepted it as a clinical diagnosis, ...