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

Scientists study DMN:

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.*

NSF Certified for Sport®. The industry's highest bar.

SIMON HILL, 38TERA® CO-FOUNDER

NSF Certified for Sport® is not a marketing badge. It is an independent certification program that tests supplements for 280+ banned substances. Every batch of DMN® is tested under this protocol — not once at launch, but every production run before anything ships.

280+ Banned Substances

280+ substances prohibited across professional and elite sport — tested per batch. WADA, NFL, MLB, NBA, and PGA compliant.

Contaminant Testing

Heavy metals, pesticides, and microbiological hazards — tested in raw materials and in the finished product before any batch is released.

Label Accuracy

Every active ingredient confirmed at the dose stated on the label — independently tested, not self-declared by the brand.

Manufacturing Audit

Facility standards independently audited: raw material sourcing, in-process controls, and finished product release protocols.

Real People, Real Reviews

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Total 5 star reviews: 871 Total 4 star reviews: 87 Total 3 star reviews: 51 Total 2 star reviews: 21 Total 1 star reviews: 21
Customers Talked About
Reviews Summary
Customers say this product helps them feel more regular and reduces bloating. Many report noticing improvements within days to weeks, with better digestion and increased energy. The powder mixes well and tastes pleasant. Some users mention it takes time to work, and a few haven't experienced noticeable changes. Overall, customers appreciate the ease of use and find it a helpful addition to their daily routine.
1,051 reviews
  • A. B.
    Flag of United States
    Verified Buyer
    I recommend this product
    What are you hoping to improve? Pick one that describes you best. Gut microbiome
    Rated 5 out of 5 stars
    21 minutes ago
    Game Chamger-Original Subscriber

    Subscriber as soon as it was available.

    Has made all the difference as a long term IBS sufferer.

  • david l.
    Verified Reviewer
    I recommend this product
    Rated 5 out of 5 stars
    Yesterday
    Gut health

    I have been using this product for nearly 6 months.

    It has definitely helped my overall gut health.

    More regular and much less overall gut problems.

    Highly recommended.

  • James R.
    Flag of United States
    Verified Buyer
    I recommend this product
    What are you hoping to improve? Pick one that describes you best. Gut microbiome
    Rated 5 out of 5 stars
    2 days ago
    Feeling Good

    Notable difference in my BM

  • Betty
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 days ago
    Love this product

    I've been using DMN now for almost 2 years and love this product. I recently took the travel sachets on a 2 week trip to Europe and they worked great. I only wish they were a little easier to open, but they didn't leak or spill on the trip. And most important, I have no bowel issues while traveling!

  • Suzanne Y.
    Flag of United States
    Verified Buyer
    I recommend this product
    What are you hoping to improve? Pick one that describes you best. Bloating
    Rated 5 out of 5 stars
    3 days ago
    Love this product!

    My bloating has noticeably reduced and elimination has improved!