The Right Way to Your Health

unlike any other gut supplement

Developed By Dr. Will Bulsiewicz, internationally known gastroenterologist, gut microbiome expert, New York Times Bestselling Author

Clinically proven ingredients delivered at therapeutic doses.*

Improves gut barrier function (reversing leaky gut) & normalizes bowel movements.*

Reduces and eliminates gut symptoms like bloating and discomfort.*

Certified low FODMAP means it's gentle on digestion.

Fiber, resistant starch, and polyphenols from seven plants in one bioactive supplement.

2 teaspoons, once a day. Add water. Refreshing, delicious, and easy.

Better Gut Health Starts Here

Globally Sourced Ingredients

for a Healthy Gut*








The Science

Behind DMN-01

Minimum Effort.
Maximum Impact.

Two teaspoons, once a day.
Feel the difference.

Glorious Bowel Movements

You’ll improve bowel function and stool consistency, with the ability to normalize both mild diarrhea and mild constipation.*

Experience Digestive Comfort & Relief

Our ingredients are delivered in therapeutic doses to help relieve or reduce bloating, abdominal discomfort, and other gastrointestinal symptoms.*

Grow Your Own Probiotics

DMN-01 contains ingredients shown to increase the abundance of the beneficial microbes Akkermansia, Bifidobacterium and Faecalibacterium to support optimal gut microbiome health.*

Create Powerful Anti-Inflammatory SCFAs

Resistant starch, fiber, and polyphenols support intestinal short chain fatty acid production (SCFAs) which are proven to reduce inflammation throughout your body.*

Restore Gut Barrier Integrity

DMN-01 contains ingredients shown to enhance gut barrier function and reduce intestinal permeability. In layman's terms, this means correcting leaky gut.*

Lower Blood Histamine Levels

For the first time, a prebiotic supplement found in DMN-01 has been shown to lower histamine levels. This may be beneficial to those with histamine intolerance.*

Inspired by patients.

As an internationally renowned gastroenterologist, I am creating solutions to the very real problems many people experience as the result of a damaged gut microbiome.

Guided by science.

38TERA products work because we use clinically validated ingredients at therapeutic doses to achieve optimal gut health benefits. It’s formulated combining clinical research and microbiome expertise.

Designed for you and your microbes.

Your gut microbes are central to your health and 38TERA is designed to nourish and enhance your gut microbiome to elevate your health.

Dr. Will Bulsiewicz, MD, MSCI

As a gastroenterologist, I struggled to find trustworthy, well-formulated supplements I could have for my patients.

Everything I looked at made claims not based on scientific evidence or credible research and many are not appropriately tested. 

My frustration led me to do something radical!

Introducing 38TERA— a gut-focused company dedicated to providing the supplements I always wished I had for my patients.

I started with this question:

“What would I put in a gut health supplement if there were no limits on sourcing the absolute best, clinically validated, and most beneficial ingredients?”

This question took me on a three year quest researching and then searching for those exact ingredients all around the globe.

Ingredients that are proven to fulfill my goals for a supplement that would produce health-creating results.

My next question:

“How do I make this as easy as possible for people to consume daily?”

This is why our formulation for DMN-01 can be simply added to water for a refreshing and delicious drink. Or throw it in a smoothie…or mix it with some yogurt...or kefir, whatever you like!

Best of all, DMN-01 does not require refrigeration so you can take it on the go.

The Vision

Create a product that supports a wide variety of microbes.

While most prebiotics deliver a large amount of one kind of fiber, our gut bugs love a wide variety of fiber, resistant starch, and polyphenols.*

Dr. Will Bulsiewicz, MD, MSCI

Dr. B is a gastroenterologist, internationally recognized gut health expert and the New York Times bestselling author of the books Fiber Fueled and The Fiber Fueled Cookbook.

He completed a bachelor’s degree from Vanderbilt University, a medical degree from Georgetown University, and a master’s in clinical investigation from Northwestern University. Dr. B was the chief medical resident at Northwestern and the chief gastroenterology fellow at The University of North Carolina, and received the highest award given by both his residency and fellowship. He completed an epidemiology fellowship on a grant from the National Institutes of Health at UNC’s prestigious Gillings School of Global Public Health. He’s the author of more than 20 articles published in peer-reviewed scientific journals, has given more than 40 presentations at national meetings, and has educated more than 15,000 students through his courses on