TopicsSupplements and minerals
DAO enzyme supplements
For histamine intolerance symptom relief
Most of the experts we follow recommend it.
Consider oral DAO supplements to help break down histamine and reduce related symptoms, though evidence is promising but not definitive.
Who is behind it
Voices including a registered dietitian, an endocrinology-trained performance coach and one of our sources.
How strong the research is
Mostly expert experience so far, with published research still catching up.
In their words
““DAO” is an enzyme you can take with high histamine foods to help you break it down”
a registered dietitian
DAO is an enzyme you can take with high histamine foods to help break down histamine.
With care
Some of the minds attach conditions. These are worth reading before you begin.
Supplemental DAO could be useful to degrade histamine and prevent histamine intolerance.
Oral DAO enzyme may reduce GI and skin symptoms related to histamine intolerance based on an open-label pilot study.
Talk it through
Entrain shows what the experts teach, so you can make better decisions with your own clinician. It does not diagnose or prescribe. If something is worrying you, start there.
How this reading was made
Every line here comes from a doctor, scientist or coach speaking publicly, and links to the moment they said it. Entrain listens for where independent experts arrive at the same place on their own, and shows where they part ways. Mostly expert experience so far, with published research still catching up.
None of the statements here come with a declared commercial interest. Last refreshed 23 September 2026.
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