Although we fully support our products, it may happen that you are not satisfied. Please let us know within 14 days after purchase! Send us an email via info@intoleran.com and let us know why you are not satisfied, you will receive a response from us within 48 hours.

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Delivery time varies per country and continent and can take up to 1 day to 4 weeks. For specific delivery times per country go to our shipping & return page

The enzymes we use in our supplements are extracted from several sources:

• Diamine Oxidase: Extracted from pig kidney extract
• Lactase powder: Extracted from the fungus Aspergillus oryzae
• Liquid lactase: Extracted from Saccharomyces Marxianus
• Alpha Galactosidase: Obtained from the fungus Aspergillus niger
• Xylose Isomerase: Obtained from Xylose medium
• Gluco-Amylase: Obtained from the mould Aspergillus niger
• Invertase: Obtained from the yeast Saccharomyses Cerevisiae

It is certainly possible to use the digestive enzyme products on a daily basis. With all products, a maximum daily amount is indicated; we recommend not exceeding it.

The digestive enzymes used in our supplements come from plant sources and are almost identical to the enzymes your body produces. This also makes the supplements not harmful to use daily, even in the long term. The enzymes have only 1 task in the intestines and leave the body again via the natural route after this.

After taking the lactase tablets or capsules, the lactose from food is digested immediately. The once a day is a probiotic with an average efficacy period of 5-14 days.

Within lactase tablets and capsules, we have different strengths available. The number behind "lactase" represents the dosage of the lactase enzyme in the product. The higher the number, the higher the dosage of lactase. You can choose from 2,500, 3,000, 10,000 and 20,000 FCC lactase.

If you have trouble digesting lactose, there are a number of products that can help:

• Lactase 20,000: Tablets with the highest dose of lactase (20,000 FCC), ideal for digesting large amounts of lactose.
• Lactase 10,000: Capsules with a high dosage of lactase (10,000 FCC), ideal for digesting large quantities of lactose.
• Lactase 3000: Standard capsules with a lower dose of lactase (3000 FCC), to be used with smaller amounts of lactose.
• Lactase 2500: A small, easy-to-swallow tablet with the lowest dosage of lactase (2500 FCC). Very suitable for children.
• Lactase drops: Use to make (sweet) dairy products lactose-free. Handy for cooking or baking.
• Once a day: A probiotic with a combination of 6 specially selected lactic acid ferments. Easy to take long-term as only 1 capsule needs to be taken daily.

You can use the lactase drops for making various liquid (sweet) dairy products, lactose free. Depending on the amount and consistency of the product, you can add a number of drops. After 24 hours, 80% of all lactose in the product has been broken down. Products that you can make lactose free using the drops include: Milk (5 drops per litre) Chocolate milk (5 drops per litre) Coffee milk (5 drops per 250 ml) Whipped cream (5 drops per 250 ml) Cooking cream (5 drops per 250 ml) Condensed milk (10 drops per 250 ml) Mascarpone (10 drops per 250 ml) Cream cheese (10 drops per 250 ml)

Unfortunately, the drops are not resistant to an acidic environment and therefore they are not suitable to make acidic dairy products such as yogurt, cottage cheese, sour cream, crème fraîche or buttermilk lactose free. However, you can take a lactase tablet or capsule to still be able to properly digest all lactose.

Add the required number of drops to the dairy product. Make sure the drops are mixed well into the dairy product by shaking or stirring well. Then leave it in the refrigerator for at least 24 hours. After 24 hours, at least 80% of all lactose will have been broken down. If you would like a completely lactose free dairy product, add more drops or leave it for longer in the refrigerator before use.

You can feel free to use the once a day capsules for a long period of time, it does not cause any disadvantages or side effects. Many of our customers have been happily using this product for years. You can also choose to use this product temporarily, for example during a holiday.

It does not matter what time of day you take the once a day capsule, as long as it is around the same time every day (such as every morning at breakfast). Although many people take the capsule with a meal, this is not necessary.

As the once a day capsules need some working-in time, we do not have samples available. However, you can try the once a day capsules without any obligation. In the unlikely event that you are not satisfied with the product, you can contact us and make use of the no-impact money-back service.

We recommend starting with 3 capsules before meals. This way, enough of the digestive enzyme enters the body. Should this amount be sufficient, you could try a lower dosage. How many capsules are sufficient may vary from person to person

We recommend taking the capsules immediately before, or with the first bite of a meal. This way, the digestive enzyme enters the intestines together with the food.

You can safely use our fructase capsules several times a day. However, we recommend you stick to the maximum number of capsules per day. For fructase, this is a maximum of 15 capsules per day.

We recommend taking the capsules immediately before, or with the first bite of a meal. This way, the digestive enzymes enter the intestines together with the food.

We recommend starting with 3 capsules before meals. This way, enough of the digestive enzymes enter the body. Should this amount be sufficient, you could try a lower dosage. How many capsules are sufficient can vary from person to person.

You can safely use our starchway capsules several times a day. We do recommend that you stick to the maximum number of capsules per day. For starchway, this is a maximum of 15 capsules per day.

We recommend taking the capsules immediately before, or with the first bite of a meal. This way, the digestive enzyme enters the intestines together with the food.

We recommend starting with 3 capsules before meals. This way, enough of the digestive enzyme enters the body. Should this amount be sufficient, you could try a lower dosage. How many capsules are sufficient may vary from person to person.

You can safely take our fibractase and fibractase forte (1200) capsules several times a day. We do recommend that you stick to the maximum number of capsules per day. For fibractase and fibractase forte (1200) this is a maximum of 15 capsules per day.

Within quatrase capsules, we have 2 different strengths available, quatrase (5000) and quatrase forte (10,000). We recommend trying the highest strength first (quatrase forte 10,000). Later, you can scale down if necessary.

You can safely use our quatrase (5000) and quatrase forte (10,000) capsules several times a day. We do recommend that you stick to the maximum number of capsules per day. For quatrase (5000) and quatrase forte (10,000) this is a maximum of 15 capsules per day.

We recommend starting with 3 capsules before meals. This way, enough of the digestive enzymes enter the body. Should this amount be sufficient, you could try a lower dosage. How many capsules are sufficient can vary from person to person.

For our cozidase capsules, the advice is to take a maximum of 2 capsules per day, preferably spread over the day (from 7 years old onwards). For children 4-6 years old, we recommend a maximum of 1 capsule per day.

No. Cozidase contains a special mix of vitamins and minerals, without the enzyme diamine oxidase. This makes cozidase suitable for vegetarians and vegans.

Yes, it is possible. Cozidase is high in copper and zinc, which can cause nausea symptoms when taken on an empty stomach. We therefore recommend always taking the capsules with a meal. If symptoms persist: take 1 capsule daily instead of 2.

For our DAO mini tablets, the advice is to take a maximum of 3 tablets per day, preferably spread over the day.

The difference between the DAO products is the addition of vitamin C and quercetin in DAO plus. Both DAO plus and DAO mini contain the same amount of the enzyme diamine oxidase.

DAO refers to products containing the enzyme diamine oxidase.

We recommend dividing the capsules over the day. The easiest way is to take one capsule with each main meal (breakfast, lunch and dinner).

The difference between the DAO products is the addition of vitamin C and quercetin in DAO plus. Both DAO plus and DAO mini contain the same amount of the enzyme diamine oxidase.

DAO refers to products containing the enzyme diamine oxidase.