specialist in digestive health since 2008

specialist in digestive health since 2008

We have been developing and producing nutritional supplements since 2008. Our products are specially developed with great care and attention by our in-house dieticians. For the composition of our products we use only necessary ingredients, so our products are pure, free of gluten and soy and of high quality. This ensures that our supplements can be used safely and without adverse side effects. Our products are low FODMAP Certified™ by Monash University.

free dietary advice

free dietary advice

Our team of specialized dietitians is always at your service with practical advice and additional information about our products. Contact us via:

Chat: for quick and direct personal advice

Mail: info@intoleran.com

Phone: +31302272172

more than 100,000 satisfied customers

more than 100,000 satisfied customers

Since 2008, our mission is to help everyone enjoy their food. We are proud to support over 100,000 customers already.

DAO plus

DAO plus

DAO Plus is een Diamine Oxidase (DAO) enzym bevattend voedingssupplement. Het is een DAO Plus is a dietary supplement containing Diamine Oxidase (DAO) enzyme. It is a food supplement and NOT an anti-histamine. DAO plus is available in a pack of 50 capsules. Want to try it first? Then order a sample of 5 capsules.

When you take one capsule of DAO Plus just before a meal, the capsule dissolves in the small intestine, releasing the enzyme Diamine Oxidase which mixes with the food. This makes it easier for your body to digest histamine.

Take one DAO Plus capsule with some water just before a meal containing histamine. Use a maximum of 3 capsules per day.

DAO Plus contains the enzyme Diamine Oxidase, which is extracted from pig kidney. It is therefore not suitable for vegetarians.

DAO Plus capsules contain 4 small tablets per capsule. It contains 2 gastro-resistant tablets with the Diamine Oxidase enzyme, 22,000 HDU per capsule. This allows the enzyme to pass through the stomach (gastric acid) without problems and to do its work in the small intestine. It also contains 1 tablet with Vitamin C and 1 tablet with Quercetin. 

The ingredients of DAO Plus are: Fillers: microcrystalline cellulose, hydroxypropyl cellulose; Quercetin 95%; Vitamin C (L-ascorbic acid); Glazing agent: ethyl cellulose; Potato starch; Stabilizer: hydroxypropyl methyl cellulose; Pig kidney extract with 7% diamine oxidase (DAO); Medium chain fatty acids; Stabilizers: magnesium stearate, oleic acid, sodium alginate; Anti-caking agent: stearic acid; Humectant: glycerin; Anti-caking agent: magnesium carbonate and dicalcium phosphate; Rice starch, Colouring agent: caramel; Vegetarian capsule: hydroxypropylmethylcellulose.

The product is safe to use. The active ingredient Diamine Oxidase is an enzyme, which can also be produced by our own bodies.

Because diamine oxidase is a relatively large enzyme, it cannot pass through the gastrointestinal wall and therefore cannot enter the bloodstream. Therefore, any excess amount ingested simply leaves the body through the faeces.

DAO and cozidase

DAO Plus

50 capsules
  • Contains the enzyme diamine oxidase (DAO)
  • Supplemented with vitamin C and quercetin
  • Suitable for children 4 years and older

DAO Mini

dispenser 60 tablets
  • Contains the pure enzyme diamine oxidase (DAO)
  • Small tablet, ideal for children
  • In easy-to-bring portable dispenser


60 capsules
  • Special blend of vitamins and minerals
  • Supports the immune system
  • Pure composition and vegan ingredients
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