limited time: 50% off for life!
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4.9
100,000+ happy customers
Complete Gut Repair System
Support Your Gut, Weight & Energy — Naturally
Melts stubborn belly fat by fixing the gut that's storing it
Kills cravings by starving the bacteria that drive them
Gets you regular within two weeks
Restores all-day energy without the afternoon crash
CoreBiome Tributyrin + 6g diverse fiber
Clinically dosed and third-party tested
90-DAY GUARANTEE
We're giving you 90 days to feel the difference. That’s how confident we are in our system. If the Complete Gut Repair System doesn't live up to what we're promising, we'll refund you. No hoops, no hassle. Just reach out to our support team.
What is Fuel Health?
Fuel Health is the world's first complete gut health system that fixes the root cause: starving bacteria eating your protective gut lining. Our two-step approach stops the inflammation in 48 hours with CoreBiome® butyrate, then rebuilds your gut long-term with diverse, non-bloating fibers.
Ingredients & Allergies
Daily Tri-Biotic contains: CoreBiome® Tributyrin (300mg), Pomegranate Pericarp (100mg), Cranberry Fruit (100mg), Probiotic Blend of Bifidobacterium lactis, longum, breve (10mg), and Bacillus subtilis (10mg). Daily Diverse Fiber contains: Organic Tapioca Fiber (3.2g), Acacia Gum (2g), FOS (2g), L-arabinose (1g), and Organic Green Banana Powder (1g) for 6g total fiber per scoop.
Both products are dairy-free, gluten-free, soy-free, and made in GMP-certified facilities in the USA.
Science & Certifications
CoreBiome® Tributyrin has published clinical research on gut barrier function and is GRAS-certified (FDA's highest safety rating). Unlike sodium butyrate which dissolves in your stomach, CoreBiome® is fermented and delivers 40-59% bioavailability directly to your colon. All ingredients are generally recognized as safe with extensive safety profiles. Manufactured in GMP-certified, FDA-registered facilities.
How long until I see results?
Within 48 hours, most people feel dramatic reductions in bloating and gas as CoreBiome® stops the inflammation burning in their gut. Within one week, regular bathroom visits and steady energy become normal. By week four, complete gut transformation is clear... and with consistent use, your gut becomes self-sustaining for the long term.
How do I take Fuel?
Daily Tri-Biotic: 2 capsules with breakfast. Daily Diverse Fiber: 1 scoop mixed in 8-12oz water at breakfast. For best results, take both together daily. The synergistic effect creates lasting transformation.
What is your 90-day guarantee?
If for any reason you are not completely satisfied, you can request a refund within 90 days of delivery of your first order. We'll refund you for the full cost of the product no questions asked. For all subsequent shipments, you may reschedule or cancel at any time in Your Account.
"I've dealt with IBS for years, and I can't overstate how much this has changed my life. For the first time in ages I don't hit a wall in the afternoon. My skin even looks healthier, and I'm not constantly snacking to soothe an upset gut. It's the kind of relief that makes you realize how much your digestion affects everything. I'm genuinely grateful."
— Carolyn Cook
verified buyer
Why you need both
Single products cut corners and don't give your gut what it needs
Regulates inflammation and repairs gut barrier — so fiber works the way it should.
Feeds your microbiome and keeps you regular — so your results keep building over time.
Daily Tribiotic
Pre + Pro + Post Biotic
Reduces inflammation
and restores gut lining.
Daily Diverse Fiber
Bloat-Free Formula
Feeds your bacteria properly
for the long run.
Every Ingredient Carefully Chosen
Every ingredient in our formula is there for a reason—and backed by peer-reviewed research, not marketing fluff. We don't hide behind "proprietary blends" or vague labels. You get a clear, transparent list of clinically supported ingredients—each included at a meaningful dose.
2 part system
Switch between to learn more
CoreBiome® Tributyrin
300MG
Repairs gut barrier within 48 hours
Pomegranate Extract
100MG
Encourages beneficial bacteria growth
Cranberry Extract
100MG
Supports microbiome balance & urinary health
3-Strain Probiotic Blend
10MG
Boosts immune function & gut diversity
Bacillus Subtilis
10mg
Reduces bloating by 47% in clinical trials
CoreBiome® Tributyrin
300MG
Repairs gut barrier within 48 hours
Pomegranate Extract
100MG
Encourages beneficial bacteria growth
Cranberry Extract
100MG
Supports microbiome balance & urinary health
3-Strain Probiotic Blend
10MG
Boosts immune function & gut diversity
Bacillus Subtilis
10mg
Reduces bloating by 47% in clinical trials
Not overhyped. Just science backed gut repair that actually works.
Zero sugar, fillers, or "proprietary" blends
Clinically validated + effective
Complete repair system specifically created for long term gut health
Made in USA and third-party tested
Transformation Results
83%
say they've lost weight without changing their diet*
78%
say their cravings dropped within the first 3 weeks*
72%
say they have better, more regular digestion*
66%
say they feel more energized during the day*
*In a post purchase survey of Fuel customers who've been using the Complete Gut Repair System daily
What you can expect:
Day 1
DAY 1-2
Feel the fire extinguisher effect as CoreBiome® stops inflammation and you experience less bloating.
Notice more regular bathroom visits and steady energy as your gut barrier starts rebuilding.
DAY 7
DAY 7
DAY 30
DAY 30
Your bacteria are well-fed and happy, cravings decrease, and digestion feels effortless.
Your gut microbiome is diverse and self-sustaining—you've joined the 5% of Americans with truly healthy guts.
DAY 90
NEW NORMAL
DAY 90: New Normal
100,000+ Happy Customers
Excellent 4.9
What customers are saying
Fuel Health vs Other Brands
See how we compare!
Feeds Bacteria
Stops bacteria from eating your gut
90-Day Money Back Guarantee
Fuel System
Clinicians' Choice
10+ clinicians share this on FrontrowMD
without compensation.
View clinicians & learn more
90-DAY MONEY-BACK GUARANTEE
We know this works. If it doesn't work for you, we'll refund you. No questions asked.
Have questions?
We have answers!
How fast will I see results?
Within 48 hours, CoreBiome® begins repairing your gut barrier (clinically measured). Within 7 days, most users notice reduced bloating and more regular elimination. Within 30 days, digestive transformation is clear—comfortable, predictable, confident. Within 90 days, your microbiome is self-sustaining and resilient. Consistent daily use is essential for best results.
Why can't I just take probiotics or fiber alone?
Probiotics without barrier repair are like planting seeds in burned soil—they can't colonize inflamed tissue. Fiber without inflammation control takes 6-12 months to slowly reduce inflammation while you suffer bloating and discomfort. FUEL delivers both in the correct sequence: Heal FIRST (48 hours), then feed bacteria properly.
Will this work if other solutions have failed me?
YES—because FUEL addresses WHY those solutions failed. Probiotics failed because your gut was inflamed. Fiber failed because it caused bloating (wrong type). Elimination diets failed because you didn't address bacterial starvation. FUEL fixes the root cause: microbial cannibalism.
Is this safe to take with my medications?
FUEL uses food-based ingredients with GRAS safety status. However, if you're on prescription medications (especially antibiotics or immune suppressants), consult your doctor before starting any new supplement. We provide your doctor with ingredient lists and clinical study documentation.
What if it doesn't work for me?
90-Day Money-Back Guarantee. Use FUEL for 90 days. If you don't feel a dramatic improvement in your gut health, email us and we'll refund every penny. You keep all products and bonuses. No questions asked. No hassle.
How long do I need to take FUEL?
FUEL works best with consistent daily use. Your gut needs ongoing support to maintain the rebuilt barrier and keep bacteria properly fed. Most people notice that stopping supplementation gradually returns symptoms as the gut environment shifts back. Think of it like this: You wouldn't stop brushing your teeth once they're clean. FUEL maintains your gut's foundation.
What makes CoreBiome® different from other butyrate supplements?
CoreBiome® is the world's ONLY fermented tributyrin. Sodium butyrate smells terrible, gets absorbed in the stomach, and barely reaches the colon. CoreBiome® is odorless, fermented in the USA, has 55% colon bioavailability, is GRAS-certified, and patented. It's not "better butyrate"—it's the ONLY butyrate that actually works.
Why do I need 5 different fiber types?
Your gut bacteria are diverse—they need diverse food. Each fiber type feeds different bacterial species: Tapioca fiber provides slow fermentation and is gentle. Acacia gum feeds bifidobacteria. FOS enables rapid butyrate production. Green banana provides resistant starch for the colon. L-arabinose offers prebiotic and glycemic support. One fiber feeds one group of bacteria. Five fibers provide complete microbiome nourishment.
Will this help with weight management?
Indirectly, yes. When your gut bacteria are properly fed, they stop sending "feed me processed carbs" signals, cravings for junk food disappear, metabolism optimizes, energy increases (you move more naturally), and bloating reduces (you look and feel lighter). FUEL isn't a weight loss product—it's a gut health system. But healthy guts support healthy weight naturally.
Can I take this if I have IBS, Crohn's, or other gut conditions?
Many of our users have these conditions and see improvement. However, if you have a diagnosed GI condition, consult your gastroenterologist before starting FUEL. We're happy to provide clinical studies and ingredient documentation for your doctor. FUEL supports gut health—it's not a replacement for medical treatment.
When will my order arrive?
We're fast. Orders ship within 24 hours (Mon-Fri) with average 2-day delivery and FREE shipping on first order. You could be starting your gut transformation in 3 days.
What's inside my order?
COMPLETE BUNDLE includes Daily TriBiotic (30-day supply, 60 capsules), Daily Diverse Fiber (30-day supply, powder canister), Gut Repair Roadmap (digital), 7-Day Email Sequence (digital), and FREE Travel Packets. SINGLE PRODUCT orders include your chosen product (30-day supply) and digital welcome guide. We recommend the bundle for complete transformation.
How do I use my 90-day guarantee?
Simple. If you're not completely satisfied within 90 days of your first order, email support@fuelhealth.co and we'll process your full refund immediately. No forms. No hoops. No hard feelings.
Customer results have not been independently verified. Results may vary.
Disclaimer: 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 information on this site is not intended or implied to be a substitute for professional medical advice, diagnosis or treatment. All content, including text, graphics, images and information, contained on or available through this web site is for general information purposes only. FUEL Health makes no representation and assumes no responsibility for the accuracy of information contained on or available through this web site, and such information is subject to change without notice. You are encouraged to confirm any information obtained from or through this web site with other sources, and review all information regarding any medical condition or treatment with your physician.
Risk-Free for 90 Days or 100% Money Back