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Histamine Block

60 Capsules

Key Benefits and Actions*

  • May help support digestion of food-derived histamine in the digestive tract
  • Enhances the presence of diamine oxidase (enzyme) in the digestive tract
  • Patented material with optimized stability
  • May help support normal inflammatory responses in the digestive tract

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NOT Suitable for Vegans and Vegetarians



Free of:

Dairy, Egg, Fish, Shellfish, Tree Nuts, Peanuts, Wheat, Soy, Gluten

Histamine Block by Seeking Health contains a patented enzyme formula providing 20,000 HDU of diamine oxidase (DAO) - the main enzyme responsible for the degradation of ingested histamine - per serving (2 capsules). Histamine is known as a biogenic amine, an organic nitrogen compound, involved in certain immune responses and found in mast cells. It may be involved in regulating healthy function in the GI tract as well as the nervous system. Histamine also plays an important role in triggering the body’s normal inflammatory response. An excess of histamine can be problematic, however, leading to histamine sensitivity/intolerance, digestive concerns, allergies and more. Individual sensitivity to histamine varies, and some individuals may be more reactive to histamines and other biogenic amines in foods. Diamine oxidase (DAO) has been clinically tested and found to break down food-derived histamine in the digestive tract. DAO is not absorbed and does not have systemic activity. Histamine Block does not manage or address antibody-related or IgE-related food allergies.*

To help maintain your body's natural first line of defense against ingested histamine - your gut - try ProBiota HistaminX.

Suggested Use

Take 1 to 2 capsules no more than 15 minutes before the consumption of histamine-rich foods, or take as directed by your healthcare professional.


Children and pregnant or lactating women should consult their healthcare practitioner prior to use. This product contains an ingredient derived from porcine (pig). Avoid if allergic to pork or any other ingredient. Histamine Block is NOT EFFECTIVE for symptoms of immune-related food allergies, such as peanuts, shellfish, etc., or for gluten intolerance due to sensitivity or celiac disease. DAO is not absorbed and does not have systemic activity. Histamine Block does not manage or address antibody-related or IgE-related food allergies.

Serving Size: 2
Servings Per Container: 30

Supplement Facts

Vitamin C (ascorbic acid) 20 mg 33%
Diamine Oxidase (from porcine kidney protein concentrate) 20000 HDU **
% DV (Daily Value) based on standard 2,000 calorie daily intake
**Daily Value not established

Other Ingredients: Microcrystalline cellulose, HPMC (capsule), sucrose, rice starch, shellac, hydroxypropylcellulose, polyvinylpolpyrrolidone, hydrated magnesium silicate, acetylated corn starch, sodium carboxymethylcellulose, and glycerol.

Additional Info
Additional Info
Knowledge Base Find product FAQ and more! Click here.
Cost Per Serving $2.33
Delivery Method Vegetarian Capsule
Storage Keep tightly closed in a cool, dry place out of reach by children.
Age Suitability Adult
Manufactured In USA
Case Quantity 12
Dimensions (in.) Length: 2 / Width: 2 / Height: 3.75
Weight (lb.) 0.1000
Barcode 710465148673
Return Policy 30 Day Returns ― Learn more about our Return Policy.
Customer Reviews (8)
Life changing
Has helped with flare ups that come from eating histamine foods!!! Thank you Ben Lynch!!!!! Review by Jewels (Posted on 3/18/2018)
I was happy and pleased this stuff worked!
I was happy and pleased this stuff worked! I have cut out all dairy and gluten out of my diet. I eat non-gmo organic foods. I shop from on the outside of the store for all of our foods if I have to buy them commercially. But, it was suggested to me by a doctor that I needed to take colostrum powder from an allergy tested source to try and heal my gut. So, I bought this to take along with the colostrum figuring this would help with the histamine it would probably create. It worked and I was never more shocked. When I have any dairy, I have extra mucus that tries to come up and this stops that! Yea! Thanks for all your work and research Dr. Ben! Review by Leslie (Posted on 3/13/2018)
There is some hope
I have worked in a building for a year and a half that has exposed me to mold. It has made me experience an array of symptoms that I didn’t put together until seeing a functional medicine dr. Her testing showed I had mold toxicity and that I fall into the 25% of poplulation that has a body that doesn’t recognize mold as a threat and doesn’t eliminate it, making me toxic and sick. My building was tested and it had high concentrations of mold all over, one of the highest being where I worked everyday!!! So, I am struggling to rid that from body and any little thing can cause my body to inflame, esp histamines. Along with having stratagene report come back showing I have a slower clearance of histamine, the mold toxicity has made my life miserable. This product has helped tremendously with me trying to eat foods to help eliminate the mold and get me better. I have a long road ahead, but I know with seeking health products by my side, it will be bearable. Review by JULIE (Posted on 2/26/2018)
No more itching
Recently I'd developed full body itching every time I ate anything. My doctor recently recommended Histamine Block & while it's the priciest enzyme I've ever taken, it seems to be doing the trick - no more itching! :) Review by breanna (Posted on 2/21/2018)
World of Difference
This product has made daily living SO much better. Having high histamine intolerance means changing a number of things in order to heal and live well. However, this product has proven to be a huge help. Review by Deborah M (Posted on 1/27/2018)
I was already taking a similar product from Histame. They fell off the planet somehow so I went in search of DAO elsewhere. This is the only one I found available to the public that was gluten free. DAO has helped me a great deal and I am happy to have another source for my needs. I do think the price is too high but maybe that will change. Glad to have a larger size bottle. Review by Jenifer (Posted on 3/18/2013)
Very Good Product
Product does exactly what it says. Important to take as directed to achieve expected results. Great processing and shipping speed. Definitely recommend to all those with histamin issues. Review by Zetty (Posted on 3/6/2013)
Very good
Seemed to be helpful for histamine intolerance. Review by DS (Posted on 1/25/2013)
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*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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