This is the point where DAO supplements come in handy. DAO, or diamine oxidase, is an enzyme that breaks down histamine in the body. Taking a DAO supplement can help alleviate symptoms of ...

The digestive system uses enzymes to help break down food, and the enzyme diamine oxidase (DAO) does this for histamine. People whose bodies make less DAO or produce less-effective DAO may be ...

An enzyme called diamine oxidase (DAO) helps break down histamine. Some believe low levels or reduced activity of DAO might cause these individuals to experience facial flushing, nasal congestion ...

If you think you have histamine intolerance, it's important to see a doctor. They can check your DAO levels, assess your gut health, or test for mast cell activation syndrome (MCAS) to find out ...