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.

Don’t let bloating and gas ruin your daily life!

Feeling bloated, constipated or dealing with embarrassing gas are more than just physical discomforts—they can disrupt your entire day, leaving you feeling uneasy and self-conscious. Fortunately, there is support, Intoleran’s specially formulated vegan, dairy, gluten, and soy free supplements are designed to quickly help reduce occasional gas, bloating & indigestion*. Helping you feel comfortable, confident, and ready to take on your day without digestive distractions


Fodmix (Quatrase 10,000)

Fodmix (Quatrase 10,000)

Testpack 6 Capsules
  • Special enzyme formula designed for multiple food intolerance
  • Reduces occasional gas, bloating & indigestion*
  • FODMAPs are primarily found in dairy, fruit, vegetables, wheat, soy and legumes
  • Reduce digestive issues without a restrictive diet!*
Starchway

Starchway

Testpack 6 Capsules
  • Helps to reduce gas and bloating associated with sugar AND starchy foods*
  • Starch and sucrose are primarily found in grains, potatoes, fruit and processed foods like cookies and sauces
  • Easy to take capsule – no need to dissolve in water!
  • Fast-acting enzyme formula
Lactase 20,000

Lactase 20,000

Testpack 6 Scored Tablets
  • Helps reduce gas and bloating associated with digesting dairy*
  • Highest dosed Lactase tablet for lactose intolerance
  • Lactose (milk sugar) is primarily found in milk, cheese and other dairy products
  • Low FODMAP-certified, vegan, dairy, gluten and soy free

Intolerance Test

Not sure what’s causing your gassy stomach and bloated feeling?

Select the foods you think you may be sensitive to
Personal intolerance profile. We’ll demonstrate how the selected foods categorize into different food groups and the potential intolerances they may be linked to 
Digestive enzymes. We provide extra information about digestion and the role of digestive enzymes
Personal advice. Based on your selection of foods, we give you concrete advice and tips on how to deal with your potential food intolerances. You can also easily download your personal advice to take with you to your dietitian or doctor. Additionally, you can always consult with our own Intoleran dietitians.


Trusted by more that 100.000 happy customers and professional dietitians worldwide

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4.56 – Excellent
View all reviews
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
15/08/2026
Starchaway and carbostarch
Starchaway and carbostarch
Verified review
14/08/2026
Ease of ordering
Ease of ordering, received in a timely manner, and product ordered has been very beneficial.
Verified review
11/08/2026
Quality
Quality. Convience. Price.
Verified review
09/08/2026
It’s a little premature to be assessing…
It’s a little premature to be assessing the product I have used it once. Didn’t realize I should start with 3 tablets. The sample packet would have two doses in that case
Verified review
09/08/2026
Since I have IBS mixed
Since I have IBS mixed, your supplements are making it much easier to be able to go out to eat! Thank you!!!
Verified review
08/08/2026
Starchway has worked well for me
Starchway has worked well for me, but I take it with a couple other digestive enzymes so I don’t know how it would work alone. That’s the only reason I rated it 4 stars instead of 5.
Verified review
08/08/2026
100% works
100% works. Every dairy tastes sweeter after 24 hours.
Verified review
06/08/2026
Great products
Great products! Would like bulk packaging at better pricing, as many of my clients cannot afford.
Verified review
31/07/2026
Increased bloating
Increased bloating! My gas and bloating seems to have actually increased after using Starchway. Not sure I will recommend this product
Verified review
28/07/2026
Eating Onion Rings
I made this purchase b/c my friend from Vietnam is making a Vietnamese dinner. Without Intoleran, there would be no point in me going to the dinner. Also, I could cry because I’m so happy to indulge in onion rings once in a while. PEOPLE! THESE PILLS WORK!!
Verified review
26/07/2026
Expands my Dining Options and Makes me Feel “Normal”
I acquired histamine tolerance later in life and Intoleran Adding Mini DAO pills into my supplement mix has been such a help. Antihistamines and anti-acid supplements helped a ton, but adding these Intoleran DAO tablets have enabled me to greatly expand the variety of food I am able to tolerate. I feel so much more normal in social situations and dining out. I eat low histamine about 70 percent of the time, but when I want to indulge I reach into my pocket for the handy DAO dispenser and discretely take one or two tablets.
Verified review
24/07/2026
I received my order exceptionally quickl…
I received my order exceptionally quickly, within 2 business days of ordering.
Verified review
22/07/2026
Not working at all
Not working at all
Verified review
20/07/2026
I just got my intolerant about 3 days ag…
I just got my intolerant about 3 days ago So I haven’t had enough time to completely trial it It’s an interesting little pill If it does everything that it says I’m going to be very impressed cuz I have tried lots and lots of different supplements I like the little case that it comes in I do have one question How many should I take to start with and does it help with FODMAPs and FODMAPs digestion
Verified review
19/07/2026
1this medicine works for me
1this medicine works for me. It is always available when I need to order more and the delivery arrives promptly! Thank you for an excellent product and a well managed company.
Verified review
17/07/2026
This product has given me back my life!
This product is amazing and has given me back my life!
Verified review
16/07/2026
Intoleran
I like that there is so much information about the products that is so accurate. I think that attention has to be given when a question is sent to the dietician that they answer. I have not received the answer to my questions.
Verified review
15/07/2026
Happy with the results
Happy with the results
Verified review
14/07/2026
I’ve used it for a few years now
I’ve used it for a few years now. Excellent product for improving digestion of FODMAPS. Very gentle but effective.
Verified review
12/07/2026
Changed my life
Changed my life! I can now eat garlic and onions which has never been true
Verified review
12/07/2026
Found what I wanted easily and had it de…
Found what I wanted easily and had it delivered in a timely manner
Verified review
11/07/2026
Order never came
I ordered June 25th. Still haven’t received. No number to call for customer service. Very frustrating.
Verified review
08/07/2026
Slightly lowered prices or sales on all…
Slightly lowered prices or sales on all products when an actual sale happens.
Verified review
08/07/2026
really helps with digestion issues when…
really helps with digestion issues when eating starches. I feel good and can eat more foods that i enjoy. the small cases makes it easy to put in your purse too!
Verified review
07/07/2026
Intoleran fodmix has been a life saver f…
Intoleran fodmix has been a life saver for me. I couldn’t eat anything in the FODMAP group but now, I have much more variety in my diet as long as I take Intoleran. I have hardly any Timmy aches anymore. It’s fantastic!
Verified review
07/07/2026
Ordered
Ordered. Received in a timely manner. All good.
Verified review
07/07/2026
So far have only tried the Fructase and…
So far have only tried the Fructase and the Fibractase. Both have been very helpful. The Fibractase seems to work a little better than BeanZyme which has the same enzyme; Fibractase has a higher dose of the enzyme and the convenience of a capsule. I plan to play with the dose of the Fibractase a little since you are able to up to three capsules at a time.
Verified review
06/07/2026
Order still not received
Order still not received!
Verified review
06/07/2026
It works
It works. I feel like a new person. Don’t forget to take it before you start cooking if you taste frequently.
Verified review
05/07/2026
First of all- the products work
First of all- the products work. Second- so appreciative of the ability to now buy more of my regular products in larger sizes. Third- the speed with which we now receive products is fabulous. Fourth- customer service rocks.
Verified review
03/07/2026
I LOVE this product
I LOVE this product. It’s helped my digestion when nothing else could. Customer Service is great too.
Verified review
01/07/2026
Found the product I was looking for
Found the product I was looking for . They took my pay pal card . It was delivered in a timely amount of time .
Verified review
30/06/2026
I purchased the carbohydrate and sucrose…
I purchased the carbohydrate and sucrose enzymes. They really make a difference. A little more costly to maintain and didn’t notice if there are larger quantities.
Verified review

Intoleran Quatrase Forte

Extreme bloating after eating or does you gassy stomach controls your daily life?

If you are not sure which foods cause your symptoms, or if you are looking for a digestive enzyme that helps with multiple food intolerances, Quatrase Forte is your best choice. Quatrase Forte is a fast acting enzyme formula designed to support the digestion of the most common gut symptom triggers like FODMAPs. FODMAPs are found in foods such as milk and dairy products, fruits like cherries and apples, honey, vegetables such as onions and garlic, wheat, soy (products), legumes, and processed foods such as sauces, breakfast cereals, and candy. Quatrase Forte helps to reduce occasional gas, bloating and discomfort associated with FODMAP intolerance.* Take back control on your daily life and don’t let excessive gas and bloating makes you feel uncomfortable any longer!

Multiple food intolerance formula

Helps support digestive issues without a restrictive diet*

Helps reduce occasional gas, bloating & indigestion*

Unique enzyme mix of body own enzymes, specially designed for FODMAP issues

Vegan, dairy, gluten and soy free

Easy to take capsule. No need to desolve in water

Affordable and available over the counter


Why Intoleran

Free 1-on-1 Advice

Our team of expert dietitians is always here to provide you with practical advice and detailed information about our products. Schedule an appointment to get free dietary advice!

No effect, money back!

Risk-free trial period with our unique 100-day satisfaction guarantee. The 100-day satisfaction guarantee ensures you can test our products without any worry.

Intolerance test

By learning which foods irritate your gut, you can take more targeted action. Use the Intolerance test to get an indication on which foods pose a risk for you


Discover our full range for Intestinal health

decrease bloating

Free advice from our dietitians

Digestive complaints? Let us help you, like we’ve helped many others. We will help you to find the solution that fits your needs best.

Fill in our contact form and we will get back to you

Ask a question

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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