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.

diamine oxidase (DAO)

the enzyme diamine oxidase (DAO)

Diamine oxidase (DAO) is the body’s own enzyme that can digest histamine from food in the small intestine. Diamine oxidase is also present in the kidneys and the placenta. The diamine oxidase enzyme contained in our DAO supplements is derived from porcine kidney protein extract.

Unfortunately, no plant-based version of the enzyme is available (yet). Research has been done, but with the current technology it is still a step too far, as the shelf life of the plant-based enzyme is only a few weeks.

Diamine oxidase helps to digest the histamine that is naturally present in food. This histamine is called exogenous histamine. Because the exogenous histamine is digested in the small intestine it cannot migrate through the gastrointestinal wall into the bloodstream and increase histamine levels there.

The histamine in the body is called endogenous histamine. An excessively high level of endogenous histamine can cause histamine intolerance symptoms.

our products

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

fructase

36 capsules
  • Contains the digestive enzyme xylose isomerase
  • Pure composition and vegan ingredients
  • Low FODMAP Certified™ by Monash University

quatrase 10,000 (forte)

36 capsules
5/5
  • Special blend of digestive enzymes
  • Helps digest complex carbohydrates
  • Reduces the risk of gas formation*
  • Pure composition and vegan ingredients

starchway

50 capsules
  • Special blend of digestive enzymes
  • Pure composition and vegan ingredients
  • Low FODMAP Certified™ by Monash University

fibractase forte (1200)

36 capsules
  • Helps digest complex carbohydrates
  • Reduces the risk of gas formation*
  • Pure composition and vegan ingredients

lactase 20,000

50 scored tablets
  • Highest dosed lactase tablet
  • Ideal for large quantities of lactose
  • Pure composition and vegan ingredients
intoleran employees

free advice from our dietitians

Do you have questions about our products? Feel free to contact us. One of our dietitians will help you find the supplement that fits your needs best.

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