digestive enzymes

Digestive enzymes play a role in digestion. While it is clear that they aid digestion, it can be difficult to understand what the role of a digestive enzyme is in the digestive process. Here is a brief overview of what digestive enzymes are, how they are related to intolerances, and how enzymes in supplement form can help people with food intolerances, for example, to prevent intestinal problems.

Digestive enzymes are certain substances that have a task in our body, specifically in our digestion. They are proteins that are produced naturally in the body. These proteins have a specific function: they help to break down your food.

Different enzymes break down different foods and are produced in different places in the digestive tract. This starts with the mouth, where enzymes are released and activated in your saliva. More enzymes take part in the process in areas such as the stomach and intestines. The small intestine is where most of the breakdown and digestion takes place.

An enzyme works according to the key-lock principle, as shown below. The enzym works like a key, that only fits in a certain lock: namely the food substance. Thus the enzyme lactase only fits on lactose, after which lactose is split in glucose and galactose. So an enzym has actually only 1 task and can cause no further damage in the body.

the lock-and key mechanism

There are many different enzymes that the body needs to produce. These help break down a wide range of different nutrients, such as lactose, fructose, galactans, starch, sucrose and histamine.

A deficiency of an enzyme can lead to a food intolerance. This is different from a food allergy. The latter is the result of a reaction by your immune system and can be very dangerous. The former is simply an inability to completely break down food in your digestive system. This is usually not dangerous, but can be very uncomfortable.

Intolerance therefore involves a specific problem of breakdown, often due to a shortage of a particular enzyme. Lactose intolerance, for example, involves a shortage of the lactase enzyme, which is the enzyme responsible for breaking down lactose. In this case, lactose is not broken down, or not broken down sufficiently, resulting in unpleasant intestinal complaints.

Enzymes in supplement form, such as capsules, drops or tablets, can help people with food intolerance to digest problematic products.

Supplements for food intolerances are designed to support the body’s own enzymes and help them do their job. When a problematic food enters the digestive system, the supplement provides the enzymes that the body may lack to break it down properly. This reduces the symptoms of food intolerance, such as bloating or flatulence.

After taking the supplement, the enzymes work for 30 to 45 minutes by filling your digestive system with an extra dose of an enzyme that it normally lacks.

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.

intoleran employees

our unique range of products

quatrase forte – 36 capsules

IBS intolerances

Enzyme mix to support healthy digestion and prevent occasional gas and bloating.


fibractase forte – 36 capsules

fructan and galactan intolerance

Enzyme that helps with the digestion of carbohydrates found in grains, legumes and cruciferous vegetables.


fructase – 36 capsules

fructose intolerance

Enzyme that helps with the digestion of excess fruit sugar.


starchway – 50 capsules

CSID intolerance

Product expected to be available again mid-october

Enzyme that helps with the digestion of starchy foods and sucrose.


once a day – 30 capsules

lactose intolerance

Probiotics to help digest dairy products. Only one capsule a day.


lactase 20,000 – 50 scored tablets

lactose intolerance

Enzyme that helps with the digestion of dairy products.


lactase drops – 0.47 fl oz (14 ml)

lactose intolerance

The drops make dairy products lactose free. Ideal for cooking or baking.


DAO plus – 50 capsules

Intoleran DAO plus


Helps to digest histamine from food for those with a histamine-intolerance. Extra support of vitamin C and Quercetin.

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