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

Slide 1 selected
Total 5 star reviews: 879 Total 4 star reviews: 87 Total 3 star reviews: 52 Total 2 star reviews: 22 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.
1,061 reviews
  • Marion H.
    Flag of Germany
    Verified Buyer
    I recommend this product
    What are you hoping to improve? Pick one that describes you best. Histamine intolerance
    Rated 5 out of 5 stars
    4 minutes ago
    Works perfectly

    Helps quickly

  • Deb
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    17 hours ago
    Love this product!

    I have been using DMN for 5 months+, and am feeling great! I am excited to try the new RCE product, too! And, GREAT customer service! Thank you!

  • Jane L.
    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
    Love this product

    I have been taking this product for probably a year and I start every day with it. It has brought me into much greater regularity and gut health. I highly recommend it to my friends and neighbors. Give it a try.

  • Rhonda G.
    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
    Excellent product!

    I find this product helpful in keeping my gut healthy. It tastes good and is easy on my stomach, which can have its challenges.

  • Migdalia
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    3 days ago
    Switch my daily probiotics and feel better than ever

    I love this product. I switched my daily probiotics and feel better than ever.