Diamine oxidase (DAO), also known "amine oxidase, copper-containing, 1" (AOC1), formerly called histaminase, [1] is an enzyme (EC 1.4.3.22) involved in the metabolism, oxidation, and …

Sep 18, 2025 · What Is Diamine Oxidase (DAO)? Diamine oxidase (DAO) is a working protein called an enzyme that uses copper to quickly break down histamine. Most DAO is found in …

Jul 13, 2023 · Diamine oxidase (DAO) is an enzyme that helps break down excess histamine in your body, thus easing uncomfortable symptoms, such as nasal congestion, itchy skin, …

Oct 1, 2025 · Diamine oxidase (DAO) is a key enzyme responsible for the metabolism of histamine, preventing its excessive accumulation and thereby maintaining physi…

Sep 17, 2024 · What is DAO? Diamine Oxidase (DAO) is an enzyme that primarily exists in the intestines and kidneys. Its primary function is to break down excess histamine, a compound …

Jan 30, 2025 · In this article, we’ll dive into how diamine oxidase works and the potential benefits (and downsides) of DAO supplements. We’ll also explore other natural ways to support levels …

May 9, 2023 · In this comprehensive guide, we will explore the role of diamine oxidase (DAO) in histamine metabolism, factors contributing to low DAO levels, and the association between gut …

This article delves into the biochemical properties, physiological roles, clinical relevance, and therapeutic potential of diamine oxidase (DAO), highlighting its critical—yet frequently …

Jul 30, 2025 · The diamine oxidase (DAO) test assesses the body’s ability to break down histamine. It helps identify potential histamine intolerance, a condition where the body …

Nov 8, 2024 · Diamine oxidase (DAO) is a critical enzyme for breaking down histamine, mainly found in the intestines, kidneys, and placenta. In the intestines, DAO actively breaks down …