specialist in digestive health since 2008

specialist in digestive health since 2008

Since 2008, we’ve dedicated ourselves to crafting nutritional supplements. Our team of dieticians meticulously develops our products with exceptional care. We prioritize purity, using only essential ingredients in our formulations. This guarantees our supplements are gluten-free, soy-free, and of superior quality, ensuring safety and minimizing unwanted side effects.

Monash University low FODMAP certified™

Monash University low FODMAP certified™

Select products have been proudly Monash University Low FODMAP Certified™

more than 100,000 satisfied customers

more than 100,000 satisfied customers

Since 2008, our mission has been to “help everyone enjoy their food again.” We are proud to have supported over 100,000 customers.

About Intoleran

About Intoleran – Digestive Experts

Intoleran is a Dutch company focused on developing a wide range of dietary supplements that support digestion. Our mission is to help everyone to enjoy food again!

The story began in 2008 with founder Remko Hiemstra. Remko, who is lactose intolerant himself, saw that there was still much to be gained in the field of lactose intolerance. Driven by this, he started developing a supplement that aids in the digestion of lactose in food. In the years that followed, a broad range of dietary supplements was developed to support people with various digestive issues.

As of 2024, we sell our wide assortment of successful and highly appreciated products worldwide. A growing group of consumers, in Europe, the United States, Australia, and beyond, benefits from digestive support, allowing them to enjoy their favorite foods!

Take a look at our headquarters in Nieuwegein!

Culture & Brand values
Our culture and brand values describe who we are, what we stand for, how we interact with each other and our customers, and guide everything we do and decide.

The adherence to our culture and brand values is particularly evident in product development, where everything is based on a scientifically grounded foundation. The production process, in which the quality and purity of our products are central. Our team of dietitians is always ready to support both our clients and healthcare professionals with practical advice, explanations, and full training on our products. And in how we approach things: down-to-earth, pragmatic, and with a “go do it” mindset!

We enjoy to help you
Helping you and each other makes us happy. We understand how frustrating digestive problems can be, which is why we take the time to really listen to you and offer honest advice. We are happy to go the extra mile to truly help you because it’s important to us that you can experience a healthy and balanced digestion.

Act from expertise
Our expertise in digestion is the foundation of everything we do at Intoleran. Thanks to our knowledge, we can develop products based on scientific research, providing the best possible support. Our team of specialized dietitians is happy to share this knowledge with you.

Keep it simple & honest
At Intoleran, we keep things simple and honest. This applies to how we work, how we communicate, and especially to our products. We offer you exactly what you need: honest products with only the essential ingredients and no unnecessary additives.

Go do it
We are excited about the future and are not afraid to make decisions that have an impact. We enjoy improving something every day, no matter how small, and we love making a difference in the lives of our customers. Together with our team and our customers, we strive for success, day after day.

Meet the team

Our dedicated team is passionate about working toward innovative solutions so you can enjoy food stress-free.

Anouk

Consulting dietician

Iris

Consulting dietician

Mare

Consulting dietician

Rosanne

Consulting dietician

Melissa

Customer service & Administration

Daniëlle

Financial administration

Meltem

CRM & Social media manager

Alexander

Supply chain manager

Tal

Digital marketer

Remona

Warehouse employee

Sander

Warehouse employee

Ruben

E-commerce & Digital marketing manager

Bouke

Director finance & operations

Harmen

Managing director

Trusted by over 100,000 satisfied customers and dietitians worldwide!

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4.56 – Excellent
View all reviews
17/10/2026
I have CSID and am on Sucraid
I have CSID and am on Sucraid. Sucraid helps with the sugar, but not the starch. I am grateful for a product that can help me process starches and doesn’t require a prescription.
Verified review
16/10/2026
Starchway pro seems to be helping me.
Starchwsy pro
Verified review
16/10/2026
It’s helping my digestive symptoms
It’s helping my digestive symptoms.
Verified review
15/10/2026
It works very well
It works very well; I just wish it didn’t cause me constipation at times.
Verified review
13/10/2026
I seem to be having success with this pr…
I seem to be having success with this product. I am waiting to see if results continue.
Verified review
13/10/2026
I think it’s working
I’ve just been testing the lipase when I’ve been eating out or having an especially fatty meal at home and it seems to be taking all or most of my symptoms away. I haven’t taken it consistently but when I do, I appear to have mild to no symptoms I haven’t taken referred it to friends and just renewed my subscription.
Verified review
11/10/2026
I’ve finally been able to eat and I swit…
I’ve finally been able to eat and I switched to the Starchway pro and it’s been significantly better both work perfectly
Verified review
10/10/2026
Outstanding product, equally outstanding customer service!
The specificity of the ingredients of a tablet or capsule have made my eating life incredibly easier, and I am so thankful. The quality of the product is perfection, I would highly recommend using the supplements if you have dietary issues or enzyme deficiencies. Customer Service for this company is fantastic, their responsiveness is superb!
Verified review
09/10/2026
so far so good
so far so good…have only used once.
Verified review
09/10/2026
Very responsive
Very responsive Educational materials are great
Verified review
04/10/2026
Intoleran is the BEST
Intoleran is the BEST!! When I reached out to staff, questioning if I was taking the correct supplement for my particular issues, I was given personal attention and great guidance. Instead of guiding toward the higher priced product, they suggested I might want to try another product, which was less costly but would probably work for me. I gave the less costly product a try and it worked, saving me about $35/bottle. This demonstrated to me that Intoleran is more concerned with their consumers than profits. Thank you, Intoleran. You really are the BEST!!
Verified review
04/10/2026
Gaining Control of my Digestion
The Fructase and Fodmix capsules have helped me regain control of my digestive problems. I just wish they weren’t so expensive.
Verified review
02/10/2026
such quick service with a product that I…
such quick service with a product that I need daily and hated the hassle with other companies. I have suggested this product to others. MANY THANKS
Verified review
29/09/2026
Intoleran works great for me
Intoleran works great for me. I can enjoy going out to dinner without the discomfort I experienced in the past. I have no side effects, only benefits! Thank you Intoleran! I would love for this product to be HSA/FSA eligible.
Verified review
28/09/2026
The products did not help reduce gas aft…
The products did not help reduce gas after consuming. Maybe I don’t have a food intolerance and it’s something else. I’m not sure if I will continue purchasing this or keep experimenting with other products.
Verified review
27/09/2026
Easy ordering
Easy ordering. Good confirmation and delivery. Product catelogue good.
Verified review
26/09/2026
Works very well
These tablets really help.
Verified review
26/09/2026
I did not have a positive experience wit…
I did not have a positive experience with this product. Maybe I need something to clean out the bad bacteria in my gut first. Still having gas symptoms after eating fibrous foods and those with sugar.
Verified review
22/09/2026
Timely delivery
Timely delivery, product in good condition as expected
Verified review
22/09/2026
The plethera of digestive enzyme offerin…
The plethera of digestive enzyme offerings from intoleran make it so much easier to pick a great match for a patient experiencing digestive and gut issues! It is honestly a game changer for them! Thanks!
Verified review
21/09/2026
Works as it should
Problem free shipping and the product has helped alleviate my G.I. issues quickly.
Verified review
20/09/2026
I have not received this product
I have not received this product. Don’t know what happened either.
Verified review
19/09/2026
Works great for multiple food intolerances
Great product for people with multiple food intolerances. I still have to be aware of what I’m eating or how much but it allows me to enjoy meals without the normal consequences or when I’m uncertain about specific ingredients. It would be nice if a subscription was offered with options other than monthly or every other month.
Verified review
18/09/2026
this product is litterally changing how…
this product is litterally changing how I eat, I’m still cognisant about what I’m eating so I don’t trigger a reaction but this removes the anxiety I have about eating anything in the first place as I’m never quite sure what the trigger will be. It’s also helped me slim down, because I’m not inflamed all the time and i feel like I’m processing more of what i eat, I’m going to the bathroom more often without trouble ( inflamation would get so bad i couldn’t urinate) , it’s been a real comfort to feel like I can eat securely again. my only wish I could describe my specific issue in the app and get a recommend blend of enzymes, not just a 1 for 1 approach.
Verified review
16/09/2026
Fodmix has helped with discomfort but ha…
Fodmix has helped with discomfort but has done nothing to reduce the swelling in my abdomen. Numerous scans have been done with negative results, so I am mystified as to why I swell after eating.
Verified review
15/09/2026
Took multiple days to fulfill order
Took multiple days to fulfill order, then ship and then shipped extremely slow. Been over a week and no updates on shipping. I got this rating request before the product. so you get a 1 star.
Verified review
15/09/2026
Effectiveness of your enzymes have been…
Effectiveness of your enzymes have been a game changer for many of my patients. They are now able to tolerate more foods and have less gastrointestinal symptoms. Thank you
Verified review
13/09/2026
The shipping times could be way better
The shipping times could be way better. I’ve had to go out and get other, less effective, starch enzyme pills from retail stores to cover the gap and that kind of annoys me. These pills do work better than any other I’ve tried though, so I’ve started a subscription
Verified review
13/09/2026
I have not had such comfortable digestio…
I have not had such comfortable digestion since I don’t know when. Not perfect yet but I have faith. Plus everyone there is so responsive and pleasant.
Verified review
12/09/2026
I have been taking Fodmix for several mo…
I have been taking Fodmix for several months now, after starting with Quatrase. My body does not make enough of the enzymes needed to convert fructose into glucose that my body is better able to digest. Quatrase helped, but Fodmix does it better. It also helps by aiding digestion of carbs after they’ve been converted to sugar.
Verified review
12/09/2026
Seldom relieves the discomfort
Seldom relieves the discomfort.
Verified review
12/09/2026
I love how it works for my daughter but…
I love how it works for my daughter but it took forever to get here! That shipping time needs to be much more reasonable!
Verified review
09/09/2026
Works well & affordable even at double dose
Works well. I like to use ten drops instead of five. Easy to use and convenient replacement so I can buy regular and still enjoy it at an additional 40 to 80 cents per gallon.
Verified review
08/09/2026
Help me a lot
I have been using intoleran for about a year now and has definitely helped with my digestion issues.
Verified review
07/09/2026
I felt no bloating huge
I felt no bloating huge, especially after eating a chick pea pasta.
Verified review
06/09/2026
My husband had a massive burnt feeling in his stomach all day after he took this.
My husband had a massive
Verified review
06/09/2026
I have only used it twice for bread/whea…
I have only used it twice for bread/wheat issues. Both times the product worked. Once I experienced some minor discomfort after eating 1/2 a small sub sandwich. It lasted about 5 minutes. I plan to try it on other foods in the near future. I’m hoping for more favorable results.
Verified review
04/09/2026
Great products and ease of purchase
Great products and ease of purchase. Faster delivery would be a plus.
Verified review
02/09/2026
would have liked it to arrive sooner
would have liked it to arrive sooner.
Verified review
02/09/2026
Works great!
3 capsules handles a big meal for me and I like that you can just take 1 or 2 when having a smaller meal or snack.
Verified review
01/09/2026
Fibractase does work
I’ve been taking fibractase for awhile now. I only take as needed though and does work. I’ve never used lactase; so I can not comment on this product yet.
Verified review
01/09/2026
Works very well for fructans
Works very well for fructans; could use more lactase. Pricey but worth it for me.
Verified review
31/08/2026
I am extremely pleased with the results…
I am extremely pleased with the results I have experience, since starting Fructase; it’s amazing! The fact that I was able to speak with a specialist at the company regarding the product I needed was invaluable. I recommend Fructase for anyone suffering with a fructose intolerance.
Verified review
28/08/2026
Works great, just wish it was more affordable
Bring price down.
Verified review
28/08/2026
Amazing customer service
Amazing customer service!
Verified review
28/08/2026
Had problems submitting order
Had problems submitting order. No one replied to my email in reference to that problem. I had to call only to find out the order was messed up and was not processed with the express delivery. I never got my first order 15% off. I was told it would instead ship normal time and the label was created. Website says 2-5 days. I ordered on August 20th, sent email on Friday the 21st. Then I called only Tuesday morning. It is now Thursday evening after midnight the 28th and still no products. Now I get email 2pm on the 27th saying we have not heard from you wanting me to rate my order. Kind of hard to do when still no product in hand. I have not received any info on my order or what is happening with it.
Verified review
22/08/2026
I struggled with GI symptoms until I fou…
I struggled with GI symptoms until I found intoleran. The fact that they offer consultation with a specialist at no charge was a hugh bonus for me, as I was unsure of which product was needed for my particular issue. I can happily say that things are nearly perfect since using intoleran. I have the highest confidence in the products and appreciate the fact that they really care about their customers. I highly recommend this company. Thank you intoleran!!
Verified review
21/08/2026
Better Communication
Communication about order would be appreciated. My order “sat” and wasn’t processed until I inquired about it. I also didn’t get shipping updates and then it just suddenly arrived. The envelope it came in, while padded, did not protect my items and the boxes were crushed inside.
Verified review
20/08/2026
I was able to eat a “real” meal without…
I was able to eat a “real” meal without any after effects. Woohoo! The shipping took a long time.
Verified review
19/08/2026
I have not received the order I pay for
I have not received the order I pay for, but your website thinks I did. Please advice
Verified review
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