Innovative combination product of the histamine-degrading enzyme DAO and the amino acid L-glutamine for better tolerance of histamine-containing foods.
0.16 mg DAO per capsule - 0.47 mg per day
Plus L-glutamine in bioidentical L-form
For better tolerance of histamine-containing foods
(€1.07 / caps.)
Plus shipping costs
Ready for immediate shipment

DAOZym® - With the histamine-degrading enzyme DAO 
The list of histamine-containing and histamine-releasing foods is long. They range from hard cheese and smoked meat to various types of fruit, chocolate and alcoholic beverages such as red wine. The body's own enzyme diamine oxidase (DAO) is responsible for the breakdown of histamine. However, the degradation of histamine can be difficult for many people. There are many reasons for a reduced DAO activity, but all show the same result: discomfort after consuming many foods, caused by too little degraded histamine. DAO activity is not always restricted, and often an imbalance between the intake and degradation of food histamine leads to the same problems.
Biogena DAOZym® is an innovative combination product with the enzyme diamine oxidase (DAO) and the amino acid L-glutamine. With DAOZym®, the DAO enzyme can easily be supplied as required and thus contribute to the tolerability of histamine-containing foods. DAOZym® also contains the amino acid L-glutamine in its bioidentical L-form. DAOZym® is therefore an optimal source for the additional supply of L-glutamine in addition to the daily diet and the body's own synthesis.

• With the body's own enzyme diamine oxidase (DAO), which breaks down histamine in the intestine.
• Contains the amino acid glutamine in bioidentical L-form.

Download Product information

Non-organic product according to regulation 2018/848.

Suitable for diabetics. The information provided here is not a statement on healing or a recommendation to self-medicate. DRcaps® is a trademark of Lonza or its affiliates, registered in the USA. Subject to print or typographical errors. Version: 07.12.2023

Store in a dark, dry place at room temperature. Protect from heat. Keep out of reach of children.

The enzyme diamine oxidase (DAO)

Diamine oxidase is produced by special cells in the intestinal mucosa and released into the small intestine. This is where the enzyme which contains copper is responsible for breaking down histamine from food and other biogenic amines so that these substances cannot be absorbed further into the body. Important cofactors such as vitamin B6, vitamin C, zinc and copper increase the activity of DAO, while the amino acid L-glutamine also plays a decisive role: It strengthens and regenerates the intestinal mucosa.

High proportion of natural ingredients

Well tolerated

Produced according to the pure substance principle

Optimal absorption

Support during increased load

Recommended consumption

Take 1 capsule unchewed with some liquid immediately before a meal. Up to 3 capsules per day.

Food supplement: The recommended daily dosage should not be exceeded. Not a substitute for a balanced and varied diet and a healthy lifestyle.

Package size

60 caps (20 day supply), 33 g

Potential applications

• For the supply of the histamine-degrading enzyme DAO in case of increased need
• For better tolerance of histamine-containing foods
• As an additional source of the important amino acid L-Glutamine


per capsule

daily dose 3 capsules

% NRV*

L-glutamine0.42g1.26 g-
Protein extract2.25mg6.75 mg-
containing: Diamine oxidase (DAO)0.16mg0.47 mg-


L-glutamine, capsule shell (hydroxypropyl methyl cellulose, gelling agent: gellan gum), bulking agent: powdered cellulose, protein extract from pig kidneys (contains DAO).

100% Clean Label - without hidden additives = pure substance principle

BIOGENA is committed to transparency, honesty and responsibility, far beyond the legally required full declaration of all ingredients. We focus on 100% quality with the pure substance principle. All our micronutrient preparations are guaranteed to be pure and free from colourings, preservatives and technical additives. This leads to maximum tolerability (currently 97%) and active recommendation (currently 95%) by over 18,000 doctors and therapists and over half a million customers.

Independent laboratory tests for each individual batch
Guaranteed content of active ingredients
100% WITHOUT artificial colours and flavours, WITHOUT titanium dioxide, WITHOUT genetic engineering, WITHOUT nanoparticles, WITHOUT magnesium stearate
Own production in the BIOGENA Good Health World, Salzburg (Austria)
Premium brand raw materials - sourced directly from the world market leaders

What sets us apart

We want to create, share and increase knowledge and infect others with our enthusiasm for health. At the same time, the responsible treatment of our environment is a matter close to our hearts.

Independent family business with founder Dr Albert Schmidbauer as CEO
100% Austrian science in our preparations
Consistent pure substance principle since 2006
Environmentally friendly packaging in the BIOGENA eco-tin
State-of-the-art research and development by the largest scientific team in the industry
Double Climate Positive

Production of our premium preparations

When it comes to quality assurance, we at Biogena make no compromises. In the production of our micronutrient preparations, we always pay attention to the highest standards - for complete traceability and a fully transparent value chain: from raw material sourcing and product development through studies and application monitoring to state-of-the-art in-house production, logistics and shipping to over 60 countries around the world.

  • Careful in-house production to a unique manufacturing standard at BIOGENA Good Health World in Koppl near Salzburg, including show production
  • High-quality and sustainable branded raw materials labelled with test and quality seals
  • Each individual batch undergoes the strictest quality tests by the German LEFO Institute Dr Wichmann, where experts independently assess parameters such as impurities, pesticides and heavy metals 
  • Certified according to ISO 22,000:2018, GMP - Good Manufacturing Practice, BIO certification, Halal certification, Kosher certification
  • Use of the purest capsule shells in the world: Vcaps® Plus and DRcaps® are purely plant-based capsule shells made from hydroxypropyl methylcellulose and nothing else.

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At Biogena, “pure substance principle” means that we do not use technological additives which are used for the fully automated manufacturing of tablets, capsules and pills (e.g. anticaking or release agents and so forth) or additives that are used for optical reasons or for enhancing the taste of the products (artificial aroma, colouring agents, coatings etc.). Due to a semi-automatic manufacturing process, we can avoid these substances that often have a higher proportion in customary products than the actual active ingredients. In the case of nutritional supplements, additives have to be indicated in the list of ingredients. Here, the patient or customer can get useful information. Concerning the single ingredients, we also care for our raw materials to be free of carrier substances. In cases where this is not possible, we use natural food components such as maltodextrin, cellulose powder or calcium carbonate. The majority of our ingredients is produced exclusively for us – free of carrier substances (e.g. our enzymes our probiotics: other manufacturers often use lactose as a carrier – the product batches produced for us are explicitly without carriers).

Biogena cooperates with respected physicians and therapists in many different countries. With them, you are in good hands. You can also buy our products from our Biogena stores in Vienna, Linz, Salzburg, Graz, Natternbach, Freilassing and Frankfurt (Germany) as well as online at www.biogena.com.

BIOGENA preparations are carefully manufactured in our own production facility, BIOGENA Good Health World (Salzburg, Austria), to a unique manufacturing standard. We are certified according to ISO 22,000:2018 and GMP - Good Manufacturing Practice and have organic, halal and kosher certification. The quality-tested raw materials come from premium brand raw material manufacturers - sourced directly from the world market leaders.

Crompomissless quality