can peptides help with histamine intolerance FAQ

Although nothing can really raise your DAO levels naturally, eating a balanced diet rich in vitamins can help. Here are a few things you can do to promote healthy DAO levels: Vitamin-rich diet. Eat foods to support your DAO enzyme, such as:

Doctors don't know a lot about histamine intolerance, but some think extra histamine from certain foods can cause symptoms. Also called food histaminosis or enteral histaminosis, HIT happens after your diamine oxidase enzyme gets out of balance. Unbalanced DAO enzyme levels may happen because you have:

With HIT, you may get allergy-like symptoms such as:

Histamine is a signal protein that comes from:

Some high-histamine foods include:‌

Although fermented tea can block DAO enzymes, green tea isn't fermented. Some studies show that green tea may actually block histamine. And this can help promote healthy DAO enzyme levels.

Diamine oxidase (DAO) is a working protein called an enzyme that uses copper to quickly break down histamine. Most DAO is found in your gut and kidneys. But the DAO supplement that you buy comes from pig (pork) kidney or pea shoots. It can be hard to test for the enzyme and measure DAO in a lab. Without a reliable test, it's harder for doctors to detect low levels and diagnose HIT. Talk to your doctor before taking DAO supplements to find out what's best for your health.

It usually takes about a month for DAO supplements to work, but talk to your doctor about your specific medical condition.

Using DAO supplements for a short time appears safe for most people, but only limited safety studies have been done. Keep in mind that dietary supplements aren't approved by the FDA, so aren't made under strict rules like medicines. In fact, one review found that some batches of pork kidney DAO supplements can be about 10 times more active than others. And using the supplement longer than a month may cause:

Histamine is a key signal protein that can cause symptoms to help protect or maintain your body's health. Histamine can help your:

No, it's not an allergic reaction or a food allergy. But HIT may mimic some of the same symptoms of allergy. That's why HIT is also called a "pseudoallergy."

Although many things can deplete your DAO enzyme, lower levels have been reported with:

Because DAO supplements can contain tiny amounts of copper, plant, and animal proteins, always ask your doctor before taking the enzyme. You may want to avoid DAO if you have:

Diamine oxidase supplements claim to restore your DAO enzyme levels to get rid of histamine. A few limited studies claim that DAO supplements can help ease your:

Although there isn't a supplement to directly block histamine, there are some that may lower inflammation. Quercetin and bromelain are called mast cell stabilizers and may block histamine. Always talk to your doctor before taking any supplement and find out if it's safe for your health.

These foods can trigger higher histamine in your body: