The daily standard for gut-brain health.
Physician-formulated, reviewed by an independent clinical board. From $1.83 a day.
12-week money-back guarantee. It covers your entire first order. Full refund, and you keep the bottles.
Pick the one that sounds like you.
✓ All three share the same core: absorbable B1 + gentle magnesium
Not sure which is you? Find my formula → 5 questions, about a minute.
You won't find this in a big box store.
- Built by doctors and researchers with decades of experience and a personal connection to brain-gut health.
- Powered by a highly bioavailable form of vitamin B1 (thiamine) you can’t find on most shelves. Medicine is increasingly turning to it for answers.
- Targeted actives sourced from all over the world for maximum efficacy.
- Backed by a 100% money-back guarantee.
Recognize more than one pattern? Most people do.
Patterns travel together. The Core Trio gives you all three formulas, same core of B1 and magnesium in every bottle, and the 12-week guarantee covers your whole first order.
Every first order arrives as a kit.
Your formula, the printed Protocol Cards with dosing, timing, and what to notice week by week, and a few BellyMD extras, boxed. An $18 value, free.
Choose the 90-day supply and the pocket evidence booklet is in the box too.
One small thing sits under a lot of this.
Your gut and brain talk all day on a two-way line that runs on nerves, and nerves need fuel. A big part of that fuel is vitamin B1, and the form your nerves can actually absorb is nearly impossible to get from food alone. Every MGB+ formula fills that gap first, with magnesium alongside.
Same calm core. Different helpers for how you feel.
Want the deeper version? Read it in Dr. Rick's words →What people say
84% of surveyed customers said they intended to reorder.
Only from people who actually bought it. We show the critical reviews too, not just the happy ones.
Read every review →Real comments from our community on TikTok and Instagram. Nothing staged.
An ER doctor got tired of saying "I don't know."
I spent years as an emergency physician, and later a state public health chief physician. The same patient kept finding me: bloated, foggy, queasy, worn out, every test normal, no answers to take home. I kept noticing the same quiet thread underneath, a well-absorbed form of vitamin B1 almost no one was looking at. So I built MGB+ around it.
I didn't build it alone.
An independent board of clinicians reviewed the framework. Not paid endorsements.
Start with the one that sounds like you.
Five questions. About a minute. We point you at the right formula.
Feel the difference in 12 weeks or it's free. One email refunds your whole first order, bundles included, and you keep the bottles. From $55/mo with free shipping.