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Start monthlyThe 90-Day B1 Protocol·MGB+ Clear
Ease bloating and a heavy, slow gut.Built on a 2026 study in the journal Gut.
Vitamin B1 helps keep your gut moving. Ninety days to find your rhythm.
Early science. We keep it honest. See the science below.
Third-party tested/cGMP facility/Made in USA
New here? Code 10OFF takes $10 off your first order.
The Formula
Eight ingredients. Every dose on the label.
No proprietary blends, no hidden amounts. Physician-formulated motility support for bloating, backup, slow digestion, and that heavy, foggy feeling after meals. Here is exactly what is in each daily dose.
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The B1
Allithiamine 75 mg
Fat-soluble B1. Crosses into nerve and muscle more easily.
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Magnesium glycinate 100 mg
Gentle magnesium for a steady rhythm.
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PEA (palmitoylethanolamide) 150 mg
A calm-support lipid your body makes.
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Artichoke leaf 150 mg
Botanical for easy digestion.
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Ginger 100 mg
Settles the stomach.
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Shatavari 150 mg
A calming Ayurvedic root.
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Saffron 30 mg
For the gut-brain link.
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Lithium orotate 5 mg
A trace, to round it out.
No proprietary blends. Every dose is printed on the label. Physician-formulated by Rick Pescatore, D.O.
Start the 90-day protocol
12-week satisfaction promise. $10 off your first order with code 10OFF.
The Science
Your gut runs on vitamin B1.
Your gut moves food in a wave called peristalsis. The active form of vitamin B1 helps power the nerves and muscle behind it.
268,606
people in the study
~98,449
also had diet records
Gut (BMJ)
published 2026
In 268,606 people, more dietary vitamin B1 tracked with more frequent bowel movements.
Not all B1 is the same.
Fat-soluble B1 crosses into cells more easily than the standard water-soluble form. Illustrative.
How the study worked
Researchers used two tools. First, a genome-wide association study, which scans the whole genome across a very large group to find which genes line up with a trait, here how often the gut moves. Second, Mendelian randomization, which uses the genes a person is born with to test whether a factor like vitamin B1 is likely a cause rather than just a coincidence.
Because the gene differences are set at birth, this design is harder to fool than a simple survey. It still works with the genes and food people already had. It did not give anyone a supplement and watch what happened.
Source: Huang T, et al. Genetic dissection of stool frequency implicates vitamin B1 metabolism and other actionable pathways in the modulation of gut motility. Gut (BMJ), 2026. PMID 41558814. doi.org/10.1136/gutjnl-2025-337059
The Commitment
Why 90 days.
A gut rhythm shifts over weeks, not days. Ninety days is the honest window to give yours a fair shot.
Thirty days is a glimpse. Ninety days is long enough to judge your own gut, for yourself.
The Protocol
What happens across your 90 days.
You start here, the moment your first dose arrives.
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Weeks 1 to 4
Consistency
You build the daily habit and your body gets a steady supply. Some of the work is happening before you feel it.
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Weeks 5 to 8
Finding a rhythm
Your pattern starts to feel more predictable, day to day.
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Weeks 9 to 12
The pattern shift
A steadier, more comfortable rhythm, the kind you judge over a full stretch of weeks rather than a single day. This is the point of the whole protocol.
Some people feel a change sooner. Some need the full twelve weeks. Both are normal.
Start the 90-day protocol
See the 90-day options below.
Rick Pescatore, D.O.
Emergency physician
Editor-in-Chief, Emergency Medicine News
Founder, BellyMD
The Formulator
Built by a doctor who reads the studies.
He formulates the way he reads a study: take the strongest signal, respect what is still unknown, and print every dose on the label.
If I would not give it to my own family, it does not go on the label.
Start Your 90 Days
Choose how you start.
90-day prepay
The complete protocol, one order
$100.59/3 mo$128.97~$1.11/day
All twelve weeks in a single order at the lowest per-day cost, so the full protocol is paid for and on its way.
Prepay 90 daysJust want to try one month? Start with a single jar for $54.99. Most people give it the full twelve weeks, since that is the window the gut tends to shift over.
Our 12-week satisfaction promise. The guarantee lasts four times longer than the protocol, so the only thing you risk is the time it takes to decide for yourself.
Third-party tested. New here? Code 10OFF takes $10 off your first order.
Trust and guarantee
- Third-party tested
- cGMP facility
- Made in USA
Backed by our 12-week satisfaction promise
The guarantee lasts four times longer than the protocol. The only thing you risk is the time it takes to decide for yourself.
Honest Answers
The questions worth asking.
Why 90 days instead of a week?
A gut rhythm is a pattern, and patterns take weeks to move. Twelve weeks is a fair test, which is why Clear is built as a 90-day protocol.
What is allithiamine?
A fat-soluble form of vitamin B1, built to be easy for the body to absorb.
What if I miss a day?
One missed day barely matters. Consistency over weeks is what counts.
What if I am not satisfied?
Take the full protocol. If it is not for you, our satisfaction promise has you covered for a full year from purchase, four times longer than the protocol itself.
Is Clear safe, and is it a treatment for any condition?
Clear uses well-understood ingredients at doses printed on the label, made in a cGMP facility and third-party tested. It is not a treatment for any disease and is not meant to diagnose, treat, cure, or prevent one. Talk to your doctor if you are pregnant, nursing, or on medication.
Does the 2026 study prove this works?
It shows a link in a very large group of people. It did not test any supplement, so it does not prove that Clear changes your digestion. We are clear about that, and the science is one reason we back the protocol with a full year guarantee.
Give your gut the full twelve weeks.
The science is early but the signal is strong, the ingredients are safe and printed on the label, and our satisfaction promise outlasts the protocol four times over. The sooner you start, the sooner the twelve weeks are behind you.
Start the 90-day protocol$10 off your first order with code 10OFF.
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.
The 2026 Gut (BMJ) study referenced here is observational and genetic. It did not test MGB+ Clear or any dietary supplement, and it does not establish that any supplement treats or prevents any condition.
Huang T, et al. Gut (BMJ), 2026. PMID 41558814. DOI 10.1136/gutjnl-2025-337059.