GI Doctor-Founded

DMN

DAILY MICROBIOME NUTRITION
4.7
Rated 4.7 out of 5 stars
757 Reviews

A daily gut health formula designed to reduce bloating, improve regularity, and feed your microbiome. Backed by science, formulated by a gastroenterologist.

Reduces bloating and supports regularity*

Backed by an independent 15-day gut microbiome study

NSF® certified · FODMAP certified · third-party tested

Gentle on sensitive stomachs, powerful for your microbiome

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Dr. Will Bulsiewicz
Why Dr B recommends thisBoard-Certified Gastroenterologist · NYT Bestselling Author of Fiber Fueled

"Most people are feeding themselves — but not their microbiome. DMN™ was built to close that gap. I designed this formula because nothing like it existed."

Dr. Will Bulsiewicz, MD, MSCI — Board Certified Gastroenterologist

15 Day Microbiome Study

Your microbiome starts changing within 24 hours

An independent M-SHIME® gut-model study tracked the measurable changes that happen when you take DMN™ consistently. The data speaks for itself.

View the 15-Day Microbiome Study Results ➔

Day 1Acetate ↑ from 24hrs
First fermentation begins

Resistant starch reaches your colon and bacteria begin breaking it down. SCFA production starts almost immediately.

Day 3Acetate ↑12%
Steadier energy, fewer cravings

Short-chain fatty acids begin signalling your brain and metabolism. Acetate increases 12% — your gut is making clean fuel.

Day 5Ammonium ↓11%
Less bloating, clearer head

Ammonia (a gut irritant) drops 11% as beneficial bacteria begin crowding out fermenters that cause gas and discomfort.

Day 8Propionate ↑28%
Microbiome shift underway

Beneficial bacteria populations are measurably rising. Propionate climbs 28% — gut cells are getting well-fed, digestion smooths out.

Day 15TNFα ↓ · Akkermansia ↑
Akkermansia takes charge

Your gut's guardian bacterium rises to prominence. TNFα drops — inflammation cools. This is the gut reset you've been building toward.

1 month+Long-term foundation
Deep repair and steady balance

Your microbiome enters a phase of sustained diversity. Long-term benefits — immunity, metabolism, mood — compound with consistent daily use.

†In an Independent M-SHIME® 15-day human gut-model study, DMN™ supported microbial balance by increasing key short-chain fatty acids and reducing gut irritation markers. Not a human clinical trial.*

Tested. Certified. Trusted.

Co-Founder Simon Hill explains the importance of why every batch is third-party tested and what's on the label is what's in the product—nothing more.

NSF Certified for Sport®

Made in a GMP and FDA-accredited facility

Exceeds strict regulatory requirements

Contains minimal allergenic substances

Real People, Real Reviews

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Total 5 star reviews: 638 Total 4 star reviews: 62 Total 3 star reviews: 32 Total 2 star reviews: 14 Total 1 star reviews: 11
Customers Talked About
757 reviews
  • Roz A.
    Flag of United States
    Verified Buyer
    I recommend this product
    What are you hoping to improve with DMN? Pick one that describes you best. Constipation
    Rated 5 out of 5 stars
    1 week ago
    5 Star Poops

    Dr. B,

    Your work with Fiber Fueled and The Fiber Fueled Cookbook truly began my journey toward healing my gut. For most of my life, I struggled with chronic constipation—so severe that an ultrasound once showed I was, quite literally, full of s_ it. At 69 years old, I can finally say that I experience consistent, normal bowel movements thanks to 38Tera. I never thought this would be possible.

    Over the years, I tried countless products without success, but nothing worked like this. As a licensed professional counselor and hormone consultant for 34 years, I often tell my clients: “Listen to your gut.” But if your gut isn’t functioning, how can you hear what it’s telling you?

    Constipation is the most consistent symptom I see on my hormone checklist, and your work has given me—and those I serve—a real solution. I recommend your books and 38Tera to all of my clients.

    You’ve empowered people to take charge of their health and truly improve their lives.

    Thank you.

    3 Profile picture for 38TERA
    38TERA
    3 hours ago

    Thank you so much for sharing your story with us. What a journey, and what an incredible milestone to reach after so many years of searching for answers. We're so glad DMN has become a meaningful part of your daily routine. Thank you for trusting us with your health journey, and for helping others find theirs. ❤️

  • Andrea
    Flag of United States
    Verified Buyer
    I recommend this product
    What are you hoping to improve with DMN? Pick one that describes you best. Gut microbiome
    Rated 5 out of 5 stars
    2 weeks ago
    Feeling the best yet

    I have my life back!!!

  • Julianne P.
    Flag of Australia
    Verified Buyer
    I recommend this product
    What are you hoping to improve with DMN? Pick one that describes you best. Gut microbiome
    Rated 5 out of 5 stars
    3 weeks ago
    Life Changer

    I am an original 38TERA subscriber and can honestly say this fine product has been a life changer for me. Poor Gut Health had always dictated my daily life activities. Since taking a teaspoon of 38TERA a day, every day, my world has opened up allowing me to get out and about and eat well without crippling IBS issues. Thank you 38TERA for giving me back my life.

  • Margaret T.
    Flag of United States
    Verified Buyer
    I recommend this product
    What are you hoping to improve with DMN? Pick one that describes you best. Bloating
    Rated 5 out of 5 stars
    1 month ago
    Love this oroduct

    I have been taking this since October and have enjoyed the changes to my body! I stated out as prescribed and had no issues!

  • Bonnie
    Verified Buyer
    I recommend this product
    What are you hoping to improve with DMN? Pick one that describes you best. Gut microbiome
    Rated 5 out of 5 stars
    1 month ago
    Gently healing my gut and nourishing my microbiome

    Generally, within 15 - 20 minutes after waking, I heat up some water and have 2 teaspoons of 38TERA. It makes us well and goes down easily without chewy clumps. I like the taste, especially compared to the plain acacia fiber or psyllium husk I previously took.

    I drink this as a foundation to nourish and help wake up my gut and micro biome. I appreciate that it has multiple prebiotics in it.