Phage-1

Phage-1

Nourish Your Gut for Optimal Health and Wellness.

Gut Health Support Probiotics & Natural Healing

Phage-1: Targeted Gut Reset

The Smart Way to Weed Out Bad Bacteria—Fast.


 

❝ More Microbes Than Stars ❞

You’ve heard about probiotics.
You’ve read about your microbiome.
But what about the most abundant biological entity on Earth?

Meet Bacteriophages — viruses that only target bad bacteria.


 

How Phage-1 Works:

  • Targets harmful bacteria in your gut that feed on sugar and processed foods
  • Breaks down their cell walls and wipes them out—without harming the good guys
  • Rebalances your gut microbiome by clearing space and feeding beneficial bacteria
  • Starts working in just hours—no mega-doses or loading phases


 

 Why You Need It:

❌ Gas & Bloating
❌ Cramps & Irregular BMs
❌ Food Sensitivities
❌ Inflammation & Dysbiosis

Left unchecked, these issues can snowball into Leaky Gut or Autoimmune Disorders.


 

Clinically Supported Ingredients:

🔬 Patented Bacteriophage Blend

  • Targets bad bacteria
  • Leaves behind nutrients to help good bacteria grow
  • Increases levels of Bifidobacteria & Lactobacilli
  • Reduces inflammatory cytokines


 

Best Paired With:

✅ PRO-B11 Probiotic – for reseeding good bacteria
✅ PREbiotic Gold – to nourish your microbiome
✅ “Weed, Feed, Seed” Bundle – our complete gut reboot system


 

Gentle. Fast. Effective.

✔ Works in both small & large intestines
✔ Non-fiber based – won’t cause gas or bloating
✔ Backed by science, built for real results


 

🧬 Phage-1: The “Weed” in Our Microbiome Method

Kickstart your gut healing journey—starting today.


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Pure & Natural Ingredients
Research-Backed Formulations
Holistic Gut & Wellness Support
Committed to Your Health & Satisfaction
Regular price $24.99 USD
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Advanced Gut Health Formula – Backed by Science

Science-Backed Ingredients for Optimal Digestion
Science-Backed Formulas Clinically studied ingredients for real results.
Satisfaction Guaranteed 180-day money-back promise for risk-free wellness.
Restore Your Gut Now
Targeted Defense Uses bacteriophages to attack only harmful gut bacteria, sparing the good.
Microbiome Balance Helps rebalance the gut by supporting beneficial bacterial growth.
Digestive Relief Reduces gas, bloating, and digestive discomfort without harsh side effects.
Holistic Health Repair, restore, and balance your gut for better digestion and overall well-being.
Targeted Defense Uses bacteriophages to attack only harmful gut bacteria, sparing the good.
Microbiome Balance Helps rebalance the gut by supporting beneficial bacterial growth.
Digestive Relief Reduces gas, bloating, and digestive discomfort without harsh side effects.
Holistic Health Repair, restore, and balance your gut for better digestion and overall well-being.
Restore Your Gut Now
Empower Your Health with Pure Ingredients
NO CHEMICALS
SUSTAINABLE
vegan-friendly
TOXIN-FREE
CRUELTY-FREE
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Intestinal Fortitude provides top quality supplements. I have seen profound results in my clients when using their various formulas. They are thoughtfully created and do fantastic things to heal the gut. I was thrilled to discover Intestinal Fortitude and will be using their products forever!

Emily D., Functional Nutritional Therapist

Better Ingredients. Better Science. Better Results.
Not all supplements are created equal. See why our formulas stand out with superior ingredients, purity, and effectiveness.
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100% Clean Formula

Research-Backed Ingredients

Advanced Gut Support

Transparent Labeling

No Fluff, Just Focus

Pure & Clean Formula

Zero Artificial Additives
No Unnecessary Fillers
Zero preservatives
Zero Soy
Zero Common Allergens
Zero Gluten

Decades of Science in Every Capsule

Backed by cutting-edge research, our formulas combine the latest advancements in gut health and inflammation support. We use only the most effective, clinically studied ingredients to help you feel your best every day.
Science-Backed Wellness
Clinically Clean Formulas
Targeted Gut Support
Rigorously Lab Tested

the Intestinal Fortitude 180-Day Healthier You Guarantee.

We stand behind the quality and effectiveness of all our products. If you try any of our supplements and feel they aren’t the right fit for you, we offer a 180-day, no-questions-asked, money-back guarantee.
Frequently Asked Questions

Phage-1 targets bad gut bacteria, supports a healthy microbiome, and aids digestion without harming good bacteria.

Yes. Our supplements, are made with high-quality, natural ingredients. They’re manufactured in a GMP-certified facility in the USA and undergo rigorous quality testing to ensure purity, safety, and effectiveness.

Results can vary depending on your body and health goals. Some people experience noticeable improvements in digestion, recovery, or energy within a week, while deeper gut support and healing may take a few weeks of consistent use.

For Phage 1, the typical recommended dosage is one capsule daily. We recommend taking them in the morning with food or as directed by a healthcare professional. Always follow the instructions on the label and consult your physician if unsure.

Yes, it's safe for daily use and designed for ongoing gut support.

Real Stories, Real Results
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JESSICA CARTER
"I’ve struggled with chronic gastritis for years. After trying the ‘Reduce, Repair, Rebuild’ bundle and switching to a clean diet, my pain has mostly stopped. It’s a game-changer, and I finally have hope!"
Feeling Better Than Ever!
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SOPHIA MARTINEZ
"These supplements have made my symptoms much milder than before. I’m noticing a real improvement!"
Balanced & Refreshed
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ETHAN COLLINS
"Just 12 hours after my first dose, I drank my morning coffee without pain or cramping. I’m excited to continue using AI-5 and GLR-6!"
Supports My Routine
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AMELIA FOSTER
"I had acid reflux and microbiome issues for months. GLR-6 helped a lot, and adding AI-5 and L-Glutamine made it even better. I’m still tapering off PPIs, but I see great progress!"
Great Product, Slight Taste
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  • 1 Capsule Per Serving - 1 Month Supply
  • Made In The USA In A GMP Certified Facility
  • 120 Day Money Back Guarantee

Phage-1

  • A Cutting-Edge Patented Blend Of Bacteriophages 
  • Clears Out Unwanted Bacterial Species To Make Room For Beneficial Bacteria To Flourish
  • Effective In Both The Small And Large Intestines
$24.99
Order On Amazon
  • 1 Capsule Per Serving - 1 Month Supply
  • Made In The USA In A GMP Certified Facility
  • 120 Day Money Back Guarantee

Baby Sloth

WORKS QUICKLY

I noticed results with this supplement less than 24 hours after the first dose. It works so well for me that I might have to reduce the frequency of dosage.

PhillyMan

LOVE THIS STUFF!

I've been using Phage-1 for a few months and it makes a huge, positive difference.

MRT

EFFECTIVE AND GOOD PRICE

This product was the missing link in my gut health protocol. When I started using this, the bifido bacteria became much more effective, bloating finally stopped for good

Phage-1 IS Phase One

By now you’ve been beaten over the head with the facts about probiotics and the microbiome. Like the fact that there are more microbes in your gut than there are stars in the Milky Way. Or that there are 10 times more bacterial cells than there are human cells in your body. 

But we would hazard a guess that you’ve never read anything about the single most abundant biological entity on the planet. They are called Bacteriophages, which translates to “devours bacteria”, and that is exactly what they do. 

Bacteriophages are essentially viruses made up of a single type of DNA or RNA wrapped in a protein shell, that only infect specific types of bacteria. In this case the bacteria we are targeting are the bad bacteria that is causing “dysbiosis” in your gut. 

Your gut is unbalanced because the bad bacteria thrive on a diet of processed foods and refined sugars. What are you eating? As a Westerner, it’s very likely a diet high in processed foods and refined sugars!!!  

This can lead to typical digestive issues such as gas, bloating, cramps, sensitivity to certain foods, irregular bowel movements, and inflammation. Left unchecked, this can eventually result in Leaky Gut or even Autoimmune conditions. 

Luckily we don’t have to accept the fate of walking around out of balance and feeling like junk. Phage-1 introduces a cutting-edge patented blend of bacteriophages that attacks and destabilizes the cell walls of the bad bacteria that is causing many of our issues. As the bad bacteria is destroyed it not only clears out space for the beneficial bacteria to flourish, but leaves behind prebiotic nutrients to help them grow. 

When paired with a high-quality probiotic supplement (like say PRO-B11 (link)) studies show that the ingredients in Phage-1 can increase the population of a broad spectrum of Bifidobacteria and Lactobacilli species. As well as reduce the amount of circulating pro-inflammatory cytokines which are associated with autoimmune responses. 

 Similar to our PREbiotic Gold prebiotic supplement (link), Phage-1 works in both the small and large intestines. Because it is not a traditional starch or fiber based supplement it will not cause the gas and bloat that can be associated with other pre and probiotic supplements. Uniquely, Phage-1 starts to work within hours of your first capsule. No large doses, or loading phases. 

Phage-1 is the “Weed” portion of our “Weed, Feed, Seed” (link) microbiome bundle. For maximum results and maximum savings, may we suggest you take a look?

Customer Reviews

Based on 31 reviews
71%
(22)
16%
(5)
6%
(2)
0%
(0)
6%
(2)
E
El Critico
Funciona Bien

En cuanto al producto, es el segundo frasco que me tomo, no he visto los resultados que esperaba, pero si he sentido un poco de alivio,tal vez debieran mejorarlo para que tenga un efecto más rápido.

B
Bryce
I didn't really notice any difference with this probiotic

I'm used to taking another brand of probiotic from a big box store. That works well for me. This didn't make a noticeable difference even after I gave my other probiotic a break for a week. It was relatively easy to take and flavorless.

C
Consumer Reviewer
Intestinal Fortification Against Bad Bugs In Your System

According to the literature, the bacteriophage blend contained in Intestinal Fortitude are specially formulated to 'clear out' the bad bacteria colonizing in your body, allowing probiotics an opportunity to multiply and flourish in your gut and intestinal tract.

To elaborate: whereas prebiotics are designed to nourish the healthy intestinal flora, providing the nutrients it needs to replicate, a bacteriophage is designed to eliminate any bad bugs that are likely present inside your digestive tract and colon. Additionally, it's non-GMO, easily absorbed, and its unique strains so powerful, one capsule a day is all it takes. I feel more energetic, healthier, and have less issues with bloating and gas. Very pleased with the results of this nutraceutical.

C
Christina
Something that can help the small and large intestines for healing the stomach

First off, the capsules are not too large to swallow. They also don’t have too strong of a smell, so there wasn’t the issue of gagging. The capsules themselves were thicker, so there wasn’t an issue with them breaking open or starting to dissolve too soon and causing issues. It doesn’t matter how effective these are if you can’t get them down, so I wanted to make sure I shared that reassurance.

The wonderful part is that these are able to help in the large and small intestines to clear out the bad and make room for the good. Taking only a single capsule a day makes this so much easier to manage. It doesn’t show that it needs to be stored in the fridge or any special instructions for the best time to take them either. I would have hoped there was more guidance. I take it first thing in the morning. I start to feel a little queasy after about fifteen minutes, and then I make my breakfast shake. I have not seen the benefits that I was hoping for yet, but there is a set of supplements that are suggested with it that I have not gotten. I have noticed that the stomach stabbing pain is not as intense in the morning after I eat. That is huge. I used to have that pain about ten minutes after I would drink my breakfast and then start to feel really nauseous. I have not had as many issues with the full feeling or bloating throughout the day. I have started to feel like I have hunger without the pain or queasy feeling. I have also noticed a bit more regularity in my digestive system. I don’t feel like I just ate hours after eating and my pants fit the same with less hard tummy pressure.

At first, I assumed this was a really good quality probiotic combined with a prebiotic, hence the name, co-biotic. I was wrong; this was something much more special that I had never heard of. The label said Phage 1, and I again assumed that it was like Phase 1 with a translation problem. After doing a little research, I found out that these are so much more than what I thought. I guess these are being tested as an alternative to antibiotic use. I don’t know if it's a specific kind of phage or how it works, though. I am fascinated and excited by the idea. Antibiotics are so harsh on the body, and these are helping to flush out bad bacteria and encourage the good, so I would love to be able to take something like this instead. I know I still have a lot of healing to do for my gut health, so I am remaining open-minded.

G
George J. Gemberling
Great product!!

I like this product a lot. If you have gut issues this products for you. It’s like magic in the bottle for your intestines!

Frequently Asked Questions

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