Robb Wolf

There are many tricks, potions and gizmos but not many well researched tools that have proven research and clinical efficacy. Atrantil is unique in this regard and have proven effective for folks with a host of digestive issues.

Katie Wells

I notice a big difference in my digestion when I take Atrantil, especially when I feel bloated or just “off" from traveling.

Chris Kresser

We recommend Atrantil to our patients with bloating, constipation, IBS-C, and methane-predominant SIBO because it’s often just as effective (if not more so) than antibiotics, yet safer and with fewer side effects.

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

Individual results may vary.

© 2020 Atrantíl. All Rights Reserved.

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Even When Nothing Else Has Worked…
This Clinically Tested Formula Brings
Gut Relief Within The First 10-Days 

Robb Wolf

Chris Kresser

Kresser Institute

Take The Atrantil 10 Day Challenge Today! 

Getting Started?

Day 1-10

 Day 11 and Beyond

Take two capsules a day up to three times a day with food. Continue until you feel relief, then start taking a maintenance dose. (Dr. Brown recommends 3 bottles so you don't run out)

Feeling Better?

Take two to three capsules a day with food. This will maintain stability in your gut and the antioxidants and polyphenols in Atrantil will provide better overall digestive health.*

Irritable Bowel Syndrome (IBS): Bloating and Abdominal Discomfort

If you suffer from Irritable Bowel Syndrome (IBS), Or Small Intestinal Bacterial Overgrowth (SIBO), or even just occasional bloating, Atrantil may be the solution you’ve been looking for!

Bloating is caused by bacterial overgrowth in the small intestine. Atrantil gets to the source of the problem by getting rid of the bacteria in the small intestine and getting it to go back into the colon where it belongs. Allowing the small intestine to function normally once again, so that you can function normally once again!

If you suffer from Irritable Bowel Syndrome (IBS) Or Small Intestinal Bacterial Overgrowth (SIBO) with diarrhea, constipation or both, then Atrantil may be the solution for you!

When a change in bowel habits is present with bloating, it is likely caused by bacterial overgrowth in the small intestine. These bacteria give off-gases as a byproduct causing gut issues.

Atrantil gets to the root of the problem, eliminating bacteria in the small intestine and thereby eliminating the gases. Once the bacteria and gases are gone, the gut can go back to normal and so can you!


If you are looking to boost your health or better your microbiome, Atrantil is the number one choice.

Atrantil is packed full of beneficial antioxidants and polyphenols. These powerhouse micro-nutrients fight free radicals and nourish your microbiome. Atrantil is the natural solution for overall digestive protection and support.

Digestive Health

Try Atrantil for a full 90 Days... 

If you don’t experience better gut health, 

we will refund every penny you paid, Guaranteed!

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You are only days away from gut relief


Dr. Kenneth Brown and scientist Brandi Scott-Hoy created Atrantíl based on their understanding of how its three main natural botanicals would work together to relieve bloating and abdominal discomfort accompanied by diarrhea, constipation or both. And to prove their formula was more than just a good idea, they conducted two clinical studies.

*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. Individual results may vary.

In a double-blind clinical study of patients suffering from bloating, constipation and abdominal discomfort, Atrantíl proved to be more than 88 percent effective in relieving symptoms. The results of the study were published in the Journal of Gastroenterology and Hepatology Research – September 21, 2015 pp. 1762-1767.



The refractory open-label study targeted the toughest-to-treat patients to illustrate the efficacy of Atrantíl. Before beginning the study, patients qualified to participate only after failing to find relief from at least four other therapies. The trial showed that 80 percent of patients found relief after using Atrantíl to control their bloating, constipation and abdominal discomfort. The results of the study were published in the World Journal of Gastrointestinal Pharmacology and Therapeutics – August 6, 2016 pp. 463-468.

The Real Problem

Methane producing bacteria living in the small bowel.

Archaebacteria feed on free hydrogen to produce methane.

Peppermint –

A natural antispasmodic, Atrantil uses the whole leaf extract (not just oil) to briefly relax the small bowel which in turn allows Quebracho and Horse Chestnut work to more efficiently.

Quebracho –

A natural and very complex polyphenol which soaks up the hydrogen (the fuel needed for methane production), and also binds to and disrupts the cell wall of the archaebacteria (this weakens and stresses the methane producer).

Horse Chestnut –

A natural inhibitor to the enzyme that allows methane to be produced, this extract enters the archaebacteria cell through the disrupted cell wall and shuts down the methane-producing mechanism.

All three of the natural ingredients in Atrantil are polyphenols. After their work is done in the small bowel, they move to the colon where they are naturally cleaved and broken down into beneficial compounds, making them great prebiotics.



What are the ingredients in Atrantíl?

Atrantíl contains three all-natural active botanicals—Quebracho Colorado extract, Horse Chestnut and Peppermint Leaf. The ingredients are non-GMO, tested and held to the highest standards of purity and manufactured in the United States. Its non-active ingredients include microcrystalline, cellulose, gelatin, magnesium stearate, silicon dioxide.

Is Atrantíl allergy friendly?

Atrantíl is completely free of milk, eggs, peanuts, gluten, soy and shellfish.

Is Atrantíl gluten free?

Yes, Atrantíl is FAARP gluten free certified (<5 ppm) and safe for those with gluten sensitivities and intolerances.

Is Atrantíl vegan friendly?

Yes, Atrantíl is made with vegetable-based gelatin.


How long until I see results from Atrantíl?

Typically, most people (>86%) expect to experience relief in seven to 10 days with compliant dosing. This is why we offer the 10 Day Challenge. However, for a few users, it may take 20 to 30 days to experience significant relief.  *

Is it normal if I don’t experience relief from Irritable Bowel Syndrome (IBS), Small Intestinal Bacterial Overgrowth (SIBO), or  other symptoms immediately?

Yes. Gas producing bacteria is thought to be the root cause of symptoms for most sufferers.
The mechanism of action of Atrantíl is effective, but for patients with larger amounts of methane-producing bacteria, it’s reasonable to expect that it may take longer than only 10 days to experience relief. *

If I don’t feel relief or experience a little fatigue when I begin taking Atrantíl, is that normal?

Yes. All sufferers have varying amounts of bacteria will affect the amount of time required to take control of your symptoms. As the methane producing bacteria are being challenged by Atrantíl, they can release very small amounts of toxins as Atrantíl begins to work. This is an expected reaction and an indication that Atrantíl is working! Atrantíl therapy should be continued during this period, and in most cases taking one low-dose aspirin or ibuprofen will help with these symptoms. *

Customer Reviews

Linda H. Verified Buyer

Truly a Great Product

Atrantil has proven itself to me. I am so happy that this all-natural product can help me on those days when my digestive system does not like me. Some foods cause me to have abdominal discomfort, so if I am not totally in control of what is being served, I take Atrantil before my meal and the anticipated discomfort is avoided. For the days I have read more about review stating Truly a Great Product bloating, Atrantil has given me the relief I need. So great that it is not a product I have to take on a regular base to have it be effective, but as I need it. So glad I tried it.

Timothy N. Verified Buyer

So good!

Been taking for a month and my stomach feels better

Josephine G. Verified Buyer

Do I have a story for you!

I have had symptoms since my early 30's and I'm 84 now. I have been unable to eat the foods I love for many years and this increased over the years to the present where my diet is so restricted as to be life threatening. I have taken the recommended dose of Atrantil for 1-1/2 months and it has eliminated my problem with no side effects. The healing process will begin now and I will slowly add new foods to my diet.
This is a miracle to me and I can't begin to thank Atrantil.

Daniel O. Verified Buyer

Life changing, right next to my wallet!

There are a few critical items I am sure to always have with me, my wallet and Atrantil are at the top of the list....
Atrantil has improved the quality of my life profoundly!
Take the 2 pills with every meal for the first 30 days and give it an honest go!
It's amazing and has a great backstory!

Welcome Friends of SIBO SOS! Save up to $132 Today

Even When Nothing Else Has Worked…This Clinically Tested Formula Brings Gut Relief Within The First 10-Days 

3 Ways Atrantil Brings You Gut Relief

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Nancy F. Verified Buyer

I bought it and it's changed my life for the better!

I bought it based on the information on the product and the reviews... and I’m so glad I did! Follow the initial protocol and then maintenance. Bloating is gone and no more pain for me. Thank you so much!

Mallory M. Verified Buyer

Works Great!

I definitely see a difference/decrease in stomach pain/discomfort when I take Atranil on an as needed basis. Appreciate that it's not a bunch of weird chemicals and ingredients I can recognize!

Janet B. Verified Buyer

Love your Product!!

Love your product!! When I do need I feel I am putting something good in my body and lifestyle. 


Your IBS Relief. It's What We Do

Atrantíl is a new nutraceutical that relieves bloating and abdominal discomfort (with or without constipation or diarrhea) caused by gas in the gut. 

Developed by a gastroenterologist, Atrantíl works differently than probiotics or any other remedy.
It attacks problem bacteria and the gas they produce at the source. 

Atrantíl’s three natural botanicals work together to produce long-term relief for these difficult-to-treat digestive symptoms while promoting a healthy gut.

Don’t let bloating and abdominal discomfort keep you from enjoying life. 

The problem isn’t all in your head, it’s in your gut—and Atrantíl can help.

 Gets rid of bloating and abdominal discomfort

 Everyday digestive support

 Supports the immune system

 Gluten-free and non-GMO and vegan

 Gastroenterologist recommended

*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. Individual results may vary.