Frequently asked questions

Many of our products have a recommended dosage of 1 to 2 break tablets, 1 to 3 capsules or even 2 to 4 tablets. We recommend starting with the highest dose, to see how you react, and then reduce to a smaller dose the next time, to find your own ideal dosage.

You can safely use our lactase capsules and tablets several times a day. We do recommend that you stick to the maximum number of tablets or capsules per day. For the lactase 2500 this is a maximum of 20 tablets per day, for the lactase 3000 and lactase 10,000 this is a maximum of 15 capsules per day. For the lactase 20,000, the maximum is 10 tablets per day.

With the lactase tablets and capsules, we have different strengths available. This strength is expressed in FCC per capsule. You can choose from 2500, 3000, 10,000 and 20,000. If it is your first time trying one of our lactase products, we generally recommend trying one of the higher strengths first, for example the 10,000 or 20,000. Starting higher will give you a clearer indication of whether it will work well for you or not when you first try it. At a lower dose, it may be unclear if it helps or not, or it maybe that the dose wasn't high enough. If you have a milder degree of intolerance or only want to use the capsules or tablets for smaller amounts of lactose, you can choose the 2500 or 3000 strength - depending on whether you prefer to swallow a small tablet or a capsule. If you are more sensitive to lactose or want to consume larger amounts of lactose you may want to choose the 10,000 or 20,000.  

The enzymes used in our supplements are extracted from different sources: Diamine Oxidase: extracted from pig kidney extract Lactase powder: extracted from the fungus Aspergillus oryzae Liquid lactase: Extracted from Saccharomyces Marxianus Alpha Galactosidase: extracted from the fungus Aspergillus niger Xylose Isomerase: extracted from Xylose medium Gluco-Amylase: extracted from the fungus Aspergillus niger Invertase: extracted from the yeast Saccharomyces Cerevisiae.

If you have trouble digesting lactose, there are a number of products that can help. Below, we briefly explain which product is for which purpose. More information can of course be found on the product page of the relevant product. Lactase 2500 is our lowest dose, for example, for smaller quantities of lactose. A small easy-to-swallow tablet that is also ideal for use with children. Lactase 3000 are our standard capsules, for use with smaller quantities of lactose in the diet. Lactase 10,000 are our relatively high-dose capsules, ideal for larger quantities of lactose. Lactase 20,000 is our strongest option, ideal for large amounts of lactose. It is also convenient for dosing as the tablets are breakable. You can use our lactase drops to make your own liquid (sweet) dairy products lactose-free, such as milk, whipped cream or custard. Convenient for cooking or baking.

Many of our products have a recommended dosage of 1 to 2 break tablets, 1 to 3 capsules or even 2 to 4 tablets. We recommend starting with the highest dose, to see how you react, and then reduce to a smaller dose the next time, to find your own ideal dosage.

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 time, this does not result in any disadvantages or side effects. Many of our customers have been using this product for years with great results. You can also choose to use this product temporarily, for example during a holiday. In that case, keep in mind the build-up period of 5-14 days after the first use.

As the once-a-day capsules need some working-in time, we do not have trial samples available. You can try the once-a-day capsules without obligation. In the unlikely event that you are not satisfied with the product, please contact us, and we can issue a full refund.

Many of our products have a recommended dosage of 1 to 2 break tablets, 1 to 3 capsules or even 2 to 4 tablets. We recommend starting with the highest dose, to see how you react, and then reduce to a smaller dose the next time, to find your own ideal dosage.

Many of our products have a recommended dosage of 1 to 2 break tablets, 1 to 3 capsules or even 2 to 4 tablets. We recommend starting with the highest dose, to see how you react, and then reduce to a smaller dose the next time, to find your own ideal dosage.

Many of our products have a recommended dosage of 1 to 2 break tablets, 1 to 3 capsules or even 2 to 4 tablets. We recommend starting with the highest dose, to see how you react, and then reduce to a smaller dose the next time, to find your own ideal dosage.

Within fibractase capsules, we have different strengths available. This strength is expressed in units per capsule. You can choose between 600 and 1200 units per capsule. If it is your first time trying one of our fibractase capsules, we generally recommend trying the highest strength first. You can reduce it later if necessary.

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

Many of our products have a recommended dosage of 1 to 2 break tablets, 1 to 3 capsules or even 2 to 4 tablets. We recommend starting with the highest dose, to see how you react, and then reduce to a smaller dose the next time, to find your own ideal dosage.

Within quatrase capsule range, we have different strengths available: quatrase and quatrase forte. Quatrase contains the enzymes lactase (5,000 FCC), Xylose Isomerase (5,000 u), Alpha Galactosidase (600 u) and Invertase (250 u). Quatrase forte contains the enzymes lactase (10,000 FCC), Xylose Isomerase (7,500 u), Alpha Galactosidase (1,200 u) and Invertase (500 u). If this is your first time trying one of our quatrase capsules, we generally recommend trying the highest strength first. You can reduce it later if necessary.

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

The enzymes used in our supplements are extracted from different sources: Diamine Oxidase: extracted from pig kidney extract Lactase powder: extracted from the fungus Aspergillus oryzae Liquid lactase: Extracted from Saccharomyces Marxianus Alpha Galactosidase: extracted from the fungus Aspergillus niger Xylose Isomerase: extracted from Xylose medium Gluco-Amylase: extracted from the fungus Aspergillus niger Invertase: extracted from the yeast Saccharomyces Cerevisiae.

Yes, you can. Cozidase is high in copper and zinc. Taking Cozidase on the empty stomach may cause nausea symptoms. We, therefore, recommend always taking the capsules with a meal. If symptoms persist: take 1 capsule a day instead of 2 capsules.

No. In fact, cozidase contains no Diamine Oxidase at all. Cozidase contains copper, zinc, vitamin B6 and vitamin C.

Yes, you can. Cozidase is high in copper and zinc. Taking Cozidase on the empty stomach may cause nausea symptoms. We, therefore, recommend always taking the capsules with a meal. If symptoms persist: take 1 capsule a day instead of 2 capsules.

No. In fact, cozidase contains no Diamine Oxidase at all. Cozidase contains copper, zinc, vitamin B6 and vitamin C.

The recommendation for our DAO mini tablets is to take a maximum of 1 tablet per meal with a maximum of 3 tablets per day.

DAO includes the products that contain the Diamine Oxidase enzyme. DAO mini tablets contain only the Diamine Oxidase enzyme (DAO). DAO Plus capsules contain Vitamin C and Quercetin in addition to the Diamine Oxidase enzyme.

The amount of the active Diamine Oxidase enzyme is the same in both products, namely 20,000 - 30,000 HDU per tablet/capsule. Do you want to use only the Diamine Oxidase enzyme? Then it's best to opt for the DAO mini tablets. These are easy to swallow (5mm diameter). Do you want a product that also contains vitamin C and Quercetin? Then choose DAO plus. Want more flexibility with the amount of DAO per meal? Then DAO Plus is a better option. DAO Plus contains 2 tablets of the DAO enzyme per capsule. So you can take 1 tablet first and later take the rest of the capsule with the other 3 tablets. So you can take 6 tablets a day.

The recommendation for our DAO plus capsules is to take a maximum of 1 capsule per meal with a maximum of 3 capsule per day.  

Yes, you certainly can. The convenient thing about DAO Plus is that it contains capsules with 4 tablets in each capsule. 2 white/beige tablets with 20,000 - 30,000 HDU of the enzyme Diamine Oxidase, 1 green tablet with 38 mg of Quercetin and 1 brown tablet with 20 mg of Vitamin C. If you don't want to take Quercetin but still want to use DAO Plus, you can remove the green tablet with Quercetin from the capsule. You can also choose to use the DAO mini tablets, which contain only the Diamine Oxidase enzyme (DAO) and have no added Quercetin.

DAO includes the products that contain the Diamine Oxidase enzyme. DAO mini tablets contain only the Diamine Oxidase enzyme (DAO). DAO Plus capsules contain Vitamin C and Quercetin in addition to the Diamine Oxidase enzyme.

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.

We provide shipping to most countries worldwide. Shipping time may differ per country. We provide a track-and-trace code with every order. In The Netherlands there is free shipping with every order. In Belgium, Luxembourg, Spain and Italy the standard shipping costs are €4,00, free shipping above €50,-. In Germany the standard shipping costs are €7,50,-, free shipping above €50,-. In other EU countries the standard shipping costs are €7,50,-, free shipping above €75,-. In the UK, USA and Canada the shipping costs are €10,00. In all other countries the shipping costs are €20,00. For orders in Australia and New Zealand, please visit our Australian website

No shipping methods available for your country or do you have any questions about shipping? Please contact us!

Delivery time varies by country and continent and can take (due to COVID) between 3 days and 6 weeks.