Over 62,000 Verified 5-Star Reviews 

                        Over 62,000 Verified 5-Star Reviews

‘I Transformed My Gut in Days, Not Years’

🔥 Selling fast - 382 orders in the last 24 hours! 🔥 

‘I Transformed My Gut in Days, Not Years’

🔥 Selling fast - 382 orders in the last 24 hours! 🔥 

Real, Verified Results:
See Why Men All Over The 

World Calls Complete Gut 

Repair “life Changing”

Real, Verified Results:
See Why Men All Over The World Calls
Complete Gut Repair “life Changing”

  • All Reviews
  • Bloating
  • Weight Loss
  • Energy
  • Taste

The bloating has gone down significantly, and I can eat without feeling uncomfortable after meals. It tastes really good with just water and is super quick and easy to have on my way to work.

Daniel C.

This is my favorite collagen protein supplement, I add a scoop everyday to my main protein powder. Absolutely love it.

Matt R.

This product has eliminate my bloating. It does exactly what it said it would.

David M.

I’m always skeptical about buying products like this, but I decided to take a chance and I can honestly say that this product is amazing. Prior to buying this, I honestly felt rather bloated even after drinking a cup of water and once I started taking this, I noticed the change immediately. I have not felt this good for a long time and I am ready to purchase more. I strongly recommend it

Hector R.

I heard about your product from a coworker who raved about it. I too am very pleased with the taste, appetite, control, and no more bloating.

Cam H.

I have been using this product and have really felt the benefits. I also got my Mum on it as she has had bloating and gut issues for years and she thinks it is brilliant, it has been really effective. 

Luis P.

I'm about 3 weeks into taking this and have dropped almost 10 pounds and feel like I have more energy than I did before. 

Michael K.

Tastes great! Pounds are coming off quicker. I am combining two shakes a day with healthy eating and intermittent fasting schedule and have lost 30 lbs in five weeks 

Paul D.

The probiotic collagen is working for me. It has been as advertised. After 9-10 days I started losing weight. I’m down about 13 pounds after almost 2 months using it. Highly recommended.

Jeffrey F.

I mix it into my morning shake, and it blends beautifully — no lumps, no weird taste, just smooth and creamy. I really notice the difference when I stay consistent. My skin feels great, my digestion is happy, and I’ve got more steady energy throughout the day.

It’s one of those products that actually does what it promises.

Chaz D.

I have been using this for a couple of weeks and can definitely feel a difference in digestion and energy. Will continue using it! 

Eddie G.

Definitely noticed a flatter tummy and more energy.

John S.

This is a fabulous product - I feel amazing and it tastes great also!

Trevor E.

This Complete Gut Repair is so tasty and nutritious 

Chris S.

I love the taste and my skin looks healthy as well as my hair and nails are growing faster.

Thanks Happy Mammoth

Brendon F.

✅ 60 day money back guarantee

It’s Finally Possible To Drain “Beer Belly” Flat And Reclaim Your Confidence With Complete Gut Repair

Simply add 1 scoop of Complete Gut Repair to your coffee or smoothie to hit the “RESET” button on the gut, digestion, energy, and motivation and ignite fast, fat-melting metabolism and reclaim your masculine looks… 
This potent blend of science-backed ingredients is designed to speed up a slow gut…
Drain stuck-on belly fat, restore gut health, and unleash a man’s true potential… 
 In just 14 days…

The gut will start a powerful healing & detoxing process, freeing you from toxins that kept bogging you down…

Watch your beer belly start to shrink as bloating reduces and your abs potentially start showing again

Energy will start to surge as your healthy gut helps recalibrate your body – feel strong and unstoppable again

✅ 60 day money back guarantee

For Men Of All Ages:

Don't Let A Slow Gut Hold You Back Any Longer

Day 1 - 3: Less bloat, discomfort and stomach pain that turns strong, youthful men “old & tired”.
Day 3 - 5: Feel a surge of energy and mental clarity that can make you the envy of your peers. Your partner will notice the difference…
Day 5 - 7: Start to experience the freedom of regular, predictable bathroom visits.
Day 7 - 9: Enjoy favorite foods guilt-free, without the fear of pain or digestive upset.
Day 14: Suddenly T-shirts can fit differently, as biceps, shoulders, and pecs transform from soft and “puffy” to lean, defined and chiseled
Day 21+: This could be the new normal – a life of vitality, confidence, and virility. Reclaim youthful energy, be the hero kids admire, and be the man who commands respect without saying a word.

✅ 60 day money back guarantee

For Men Of All Ages:

Don't Let A Slow Gut Hold You Back Any Longer

Day 1 - 3: Less bloat, discomfort and stomach pain that turns strong, youthful men “old & tired”.


Day 3 - 5: Feel a surge of energy and mental clarity that can make you the envy of your peers. Your partner will notice the difference…


Day 5 - 7: Start to experience the freedom of regular, predictable bathroom visits.


Day 7 - 9: Enjoy favorite foods guilt-free, without the fear of pain or digestive upset.


Day 14: Suddenly T-shirts can fit differently, as biceps, shoulders, and pecs transform from soft and “puffy” to lean, defined and chiseled


Day 21+: This could be the new normal – a life of vitality, confidence, and virility. Reclaim youthful energy, be the hero kids admire, and be the man who commands respect without saying a word.

✅ 60 day money back guarantee

Watch Your Body Start to Transform From “Dad Bod” To “God Bod” With Complete Gut Repair

Complete Gut Repair doesn't just transform the gut – it transforms a man’s life. Here's what you can expect:

🔥 Command Attention, Not Pity: Ditch the insecurities and become the man who turns heads. Your partner will notice the difference, and you'll feel deserving of their attention and admiration.

🔥 Feel Great In Every Situation: Experience the surge of energy and confidence that comes with better gut health. No more embarrassing digestive moments or excuses, just pure confidence.

✅ 60 day money back guarantee

1 Scoop Per Day → 20 Minutes After Waking → 
Potentially Life Changing Weight Loss RESULTS

No need for extreme diets or intense exercise routines.

Hydrolyzed Bovine Collagen Peptides - The "gut glue" that helps heal your gut lining, reduces inflammation, and restores the youthful energy and vitality you crave. Plus, it's packed with high-quality protein to build a stronger, leaner physique that gets you noticed.

Prebiotic FIBRULINE - These fibres are good bacteria in your gut – the ones responsible for energy, focus, and overall well-being. Crush cravings, banish bloat, and reveal a flatter, firmer stomach for instant confidence and control.

L-Glycine - Gives an extra power of collagen by supporting your body’s natural collagen production. It also supports a healthy nervous system and the deep sleep essential for your gut to repair.

Liposomal Vitamin C (PureWay C) -A patented form of vitamin C to help the body absorb the collagen from the formula – and make more of its own, while keeping inflammation in check.

Plus: A Touch of Nature' - A hint of natural Stevia-leaf extract and a whisper of real vanilla bean provide a delicious, guilt-free flavor that complements the wholesome goodness of Complete Gut Repair

✅ 60 day money back guarantee

Complete Gut Repair

                   Over 62,000 Verified 5-Star Reviews 

                     Over 62,000 Verified 5-Star Reviews 

 10,772 Reviews 

Expertly engineered to restore gut health.

Enhance digestion.

Optimize nutrient absorption.

Select quantity:
Select your purchase type:
Free shipping on orders €99+
2-7 Day EU Delivery
60-Day Money-Back Guarantee

Free shipping on 

orders $99+

2-7 Day 

US Delivery

60-Day Money-

Back Guarantee

Product Highlights

  • Formulated with scientifically backed ingredients

  • Free from Gluten, Dairy and Sugar. Non-GMO.

  • Made in the USA with the finest local and globally sourced ingredients

  • Amazing natural vanilla bean flavour

  • 60 day money back guarantee

  • Designed for women of ALL ages

  • Easily tolerated with no GI upset

Complete Gut Repair

                   10,772 Reviews 

                     10,772 Reviews  

Over 62,000 Verified 5-Star Reviews 

Expertly engineered to restore gut health.

Enhance digestion.

Optimize nutrient absorption.

Select quantity:
Select your purchase type:
Free shipping on orders €99+
2-7 Day EU Delivery
60-Day Money-Back Guarantee

Free shipping on 

orders $99+

2-7 Day 

US Delivery

60-Day Money-

Back Guarantee

Your Purchase Is 

Protected By Our
60 Day 100% Money 

Back Guarantee

Your Purchase Is Protected By Our
60 Day 100% Money Back Guarantee

Here at Happy Mammoth, we make sure our customers love their product or we will refund 100% of their investment. We're so confident you'll enjoy The Complete Gut Repair that we'll bear all the risk.

Free Shipping On Orders €99+

If you're not happy with your results, you have 60 days to claim a refund and get your money back. Simply email our fast-acting customer. Applies to 1-jar orders.

60 Day Money Back Guarantee

Most men feel the difference within 9 days. Some feel it quicker. Some take a bit longer because everyone's different. So the best thing to do is give it a try and if you don't lose weight, you have 60 days to claim a refund and get your money back.

Instant Refunds

We want you to feel incredible effects and have visible results from using Complete Gut Repair. That's why if you're not happy with how it works for you, we'll give you a hassle-free, no-questions-asked refund.

What’s Inside Complete Gut Repair? 

Nothing But Natural, Science-Backed Ingredients

✅ 60 day money back guarantee

What’s Inside 

Complete Gut Repair?

Nothing But Natural, Science-Backed Ingredients

✅ 60 day money back guarantee

We’re On A Mission to Help 

100,000,000 Men Naturally, Safely Lose Weight In 2025… 

And Feel Like Themselves Again

We’re On A Mission to Help Help 100,000,000 Men Feel Like Themselves Again… Naturally

Matt Murphy, BBus

CEO, Founder and BioHacker

Matt founded Happy Mammoth in 2017. Driven by curiosity, learning, an obsession with high quality product formulation and a passion for natural health and , his search for potent plant-based ingredients takes him around the world working to improve lives.

Tobie Kokot, MA

Chief Nutritional Scientist

Tobie comes from Germany where he graduated with a master's degree in nutrition science. Tobie creates our natural formulas with the "German precision" that sets us apart from other brands.

Aimée Gould Shunney, N.D

Lead Naturopathic Physician

Dr. Aimée has been in private practice since 2001, currently at Santa Cruz Integrative Medicine in Santa Cruz, CA. She specializes in women’s health including menopause management, bio-identical hormone balancing, and functional digestive issues.

Still not sure? 

Here Are The Top Questions We Get 

About Complete Gut Repair

Still not sure? 

Here Are The Top Questions We Get About Complete Gut Repair

How do I use this product?

We recommend having one scoop daily. If you participate in daily physical activity, we encourage you to have two scoops to assist with muscle recovery.

Complete Gut Repair is stable in all cold liquids. You can simply mix it into a tall glass of water (200ml-300ml) like a classic protein shake. Or you can add it to coconut, almond/macadamia milk, or a smoothie.
As it is highly versatile, it can be taken at a time of day that best works for you.

Here are some suggestions:
✅In the morning to promote satiety and reduce sugar cravings.
✅Before exercise for increased strength and performance.
✅After exercise for faster recovery.
✅Before bed for improved sleep quality.

What are the ingredients in this formula?

All these natural extracts were carefully selected and dosed at clinically-proven amounts:

✅Hydrolyzed Collagen Peptides (PEPTIPLUS® XB)
✅L-Glycine
✅Liposomal Vitamin C (PureWay C)
✅Natural Vanilla Flavour
✅Natural Stevia-Leaf Extract
✅Prebiotic FIBRULINE (Inulin from Chicory)
✅Vanilla Beans

Where is the formula produced?

Complete Gut Repair is produced in the EU in small batches to maintain ultra-high quality. It meets the most rigorous standards for safety and purity.

How does the formula taste?

Complete Gut Repair comes in a natural vanilla bean flavor. It is not too sweet, so it blends perfectly with any food or drink without altering their flavor. This makes it perfect to consume in a glass of plain water, with smoothies, topped on breakfast, or even mixed with yogurt.

Is it Bovine or Marine collagen?

Our Collagen is derived from bovine. It's a type 1 and 3 collagen. These types of collagen play a major role in the growth and repair of bones, tendons, ligaments, and skin. It's typically used for gut and joint health, boosts hair and nails, and enhances exercise recovery.

Is this product vegan?

Our Collagen is sourced from grass-fed cows and is, therefore, not vegan-friendly.

Can it be used by children?

While all of our products are made of natural ingredients, you should always consult with a healthcare professional before giving it to children under the age of 18. Use in children under 12 years is not recommended.

Where should I store this product?

It's best to store this product in a cool, dry place to enjoy all its benefits.

Are there any side effects?

Our health supplements have been designed by experts. In very rare cases, some people experience adverse reactions. Please, always consult with your doctor if you experience any adverse effects or allergic reaction.

How long does the jar last?

Our jar has 24 dosages that can last up to a 1 month.

Why choose this product over others?

Our Complete Gut Repair has been carefully designed by health specialists to support healthy body balance.

Medical information, product, reviews, warnings and legal disclaimer

Product Legal Disclaimer


At Happy Mammoth, we have NO compromise when it comes to quality, safety and transparency. That's why we check that the information on our website is valid, accurate and substantiated by scientific research and clinical evidence. We avoid statements on our website that are misleading or exaggerate efficacy or performance.


To ensure the integrity of testimonials appearing on our website, we also:


- check that the person providing any testimonial is a customer and has used the good for its intended purpose


- check that the person has no connection or involvement with Happy Mammoth, including any production, sale, supply or marketing of our products


- do not give any inducement or direction in how the testimonial is written or published (other than to ensure the integrity of Happy Mammoth and our website, including consistency with the intended use of our products or our instructions for use).


Despite our efforts, please note that:


- testimonials are based on personal experiences only and do not necessarily represent what anyone else using the same product may experience - your individual results may vary.


- we are not responsible for any errors or any use of information on our website, including testimonials


- you should also not treat any information on our website as medical advice or as statements evaluated by the Food and Drug Administration, the Therapeutic Goods Administration or any other regulatory authority


- you should not regard our products as being intended to diagnose, treat, cure or prevent any disease.

If you are or you believe you are suffering from any medical condition or are taking any medication, please seek advice from a qualified healthcare professional regarding your treatment before taking any of our products. If you notice any unexpected change to any aspect of your health, please seek help from a qualified healthcare professional immediately.


If you believe that any of our communications can be confusing or biased, feel free to contact us via email: support@happymammoth.co


Product Warnings:

Consult your health professional before use.

Use in children under 12 years is not recommended.

ALWAYS READ THE LABEL AND FOLLOW THE DIRECTIONS FOR USE

Is there a guarantee?   

WARNING: Beware of Fake Happy Mammoth Formulas

To protect your health and ensure you're getting the real deal, please make sure you’re buying only authentic Happy Mammoth formulas.


Here’s how to verify that your formula is 100% legit:


✅ 1. Look for the QR Code

All official Happy Mammoth boxes come with a unique QR code printed on the packaging. Scan it with your phone, and you’ll be instantly redirected to our web domain.


✅ 2. Check the Logo + Packaging

Real Happy Mammoth formulas always feature our official logo, company name, color branding, and tamper-evident seals. No smudgy fonts. No weird stickers. No misspelled ingredients.

So, if it looks off, it probably is. But, if you’re still not sure, email support@happymammoth.co to double-check.


✅ 3. Buy Only From Official Channels

To avoid sketchy, black market knockoffs or expired stock, always purchase through our official website: eu.happymammoth.com


Do NOT buy from ANY unauthorized marketplace. No other manufacturer or distributor is authorized to produce or ship our formulas.


⚠️ Why This Matters:


Fake supplements are dangerous.


They can contain cheap fillers, expired ingredients, or unknown substances that can mess with your health, and they won’t work the way our scientifically formulated products do.


We care about your safety. We’ve spent years developing clean, research-backed formulas, so don’t let scammers take that away from you.