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Swanson Ultra


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Caps Size:
3, Pill Size Guide
300 mcg 30 Caps
  • Solution for natural histamine management

  • Natural defense against dietary histamine

  • Features diamine oxidase (DAO), the enzyme responsible for breaking down histamine

If you're one of the many who think histamine is something only related to colds or environmental allergies, think again. Many common foods actually contain histamine and/or trigger the release of histamine within the gut. The body's natural defense against dietary histamine is an enzyme called diamine oxidase (DAO). If we take in or produce more histamine than our gut has DAO to break down, reactions can occur. Now, there's help. DAOSin™ Diamine Oxidase is the only DAO ingredient in the world approved for dietary consumption and it's been helping Europeans manage dietary histamine for years. Swanson is proud to be the first company to make this groundbreaking natural product available in America at an affordable price. If you love cheese, wine, beer or bananas but they don't love you, try DAOSin and enjoy the comfort that comes with maintaining adequate levels of diamine oxidase.

Learn more about DAOSin™.

Product Label

Supplement Facts

Serving Size 1 Capsule

  Amount Per Serving % Daily Value
Porcine Kidney Protein Extract[providing approximately 7% (294 mcg) Diamine Oxidase Enzyme and 10,000 HDU**] 4.20 mg *

*Daily Value not established.

Other ingredients: Daosin® beadlets [microcrystalline cellulose (plant fiber), sucrose, ascorbic acid (vitamin C), rice starch, acid-resistant coating, hydroxypropylcellulose, polyvinylpolypyrrolidone, hydrated magnesium silicate, corn starch, carboxymethylcell-ulose, glycerol], hypromellose (vegetable capsule).

Suggested Use: As a dietary supplement, take one capsule with each meal or as needed with water.

Product of Austria

DAOSin® is a registered trademark of Sciotec Diagnostic Technologies.

Terms and Ingredient Definitions

Swanson Ultra DAOSin Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

DAOSin 4.5 5 14 16
It works Without doubt this product works. I can live a normal life and eat what I want, which I cannot do without it, having to watch everything I eat/drink and being scared of ordering things at restaurants, not know what other ingredients have been added. While the product IS expensive, I would hate to be without it. March 28, 2014
DAOsin I'm using DAOsin because of histamines in food. I follow a low-histamin diet, but when I eat foods high in histamines, daosin helps a lot. March 9, 2014
The Holy Grail I've suffered the effects of histamine intolerance for years. I tried this product with little hope it would change anything. Well, it has changed my life!! I could be a spokesperson I am so enthusiastic about the benefits. If you believe you may suffer histamine intolerance or may be lacking in the enzyme that breaks it down, it is more than worth the investment. I've been taking 2-3 Daosin per day now for 4 months. The difference in the way I feel is so unbelievable to me I sent a note to the manufacturer. I hope this product helps everyone just as much. I have found the Holy Grail. October 5, 2013
Diamine oxidase I tolerate this product very well and it has been helpful to my digestion. I found it to be the best price of all the product brands I looked at and availability is great. Delivery is timely and without any problems. A positive experience all the way around! June 29, 2013
Made a big difference for me Really has made a remarkable difference for me. Night and day difference if I forget it. Seems to work pretty well even if I forget to take immediately, even up to an hour later. May 13, 2013
Improved Quality of Life This product has helped me to be able to eat foods that I couldn't eat! April 30, 2013
More energy, less histamine response Very helpful. Have more energy. The difference was dramatic and noticeable within 2 days. Took one pill every time I ate. April 30, 2013
DAOSIN I have been seaching for a product like DAOSIN. This product is reasonable in comparsion to other products on line. I have found the product to meet and exceed effectiveness and value. I would recommend this product to anyone. April 4, 2013
Want larger bottle Would like to see this in a larger size as you can take these multiple times per day and container used up so quickly. I do recycle but still a waste. Product seems to do what it is supposed to. March 17, 2013
Needs better usage instructions This works really well! However I had to figure it out for myself that it's suppose to be taken before meals; the instructions lead me to believe it meant "after meals". Otherwise, this stuff works wonders and I highly recommend it. October 25, 2012
sell in larger quantity I do not understand why it is sold with only 30 in a bottle. This is a supplement needed before nearly every meal. A total waste of packaging as the bottle lasts 2 weeks at most! I suggest selling in a larger quantity. i can not yet recommend either way. Not sure if it is helping. will order once more to see if there is a difference. September 22, 2012
Great product, great price and speedy delivery This product is just as effective as the 'leading brand' product, the difference is that Swanson Brand is less than half the price! But most impressive was the super-fast international postage and excellent customer service. I will definately be shopping here and recommending to family and friends. Thank you April 9, 2012
Not Worth Buying I bought this product for myself and my spouse, I hoped it would work. It did not. Do not waste your money. March 18, 2012
Awesome Digestive Help I love this new product! It has made an EXTREME difference for me. Thanks for this product! January 11, 2012
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