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1,215 Reviews
Petlonga Gut-Balance Shield
The gut formula for cats who keep throwing up. Gut Balance Shield restores the imbalance behind the vomiting, the bad bacteria and the raw lining, both halves, so her food finally stays down.
Calms the vomiting
Repairs the gut lining
Soothes the irritated gut
Natural Fish-flavored
93% Sold
Ships by
From US warehouse
Ingredients
Our daily cat gut support formula combines probiotics, prebiotics, digestive enzymes, and targeted nutrients to help support healthy digestion, a settled stomach, and overall wellness from the gut outward.
Product Information
Our vet-formulated probiotic delivers 6 targeted strains and 500 million CFU, plus inulin prebiotics, digestive enzymes, omega-3 salmon oil, pumpkin powder, and soothing marshmallow root, to support your cat's health from the inside out.
- Promotes Healthy Digestion: Pumpkin powder and marshmallow root help soothe the raw gut lining, while 6 live probiotic strains rebalance the bacteria, so meals settle and stay down instead of coming back up.
- Supports Immune Function: A balanced gut microbiome strengthens your cat's natural defenses and day-to-day resilience.
- Boosts Nutrient Absorption: Pancreatin Fungal 4X enzymes and prebiotic inulin help your cat get more from every meal.
- Maintains Energy & Vitality: Norwegian salmon oil adds omega-3s to support coat and energy, so she can feel and act like herself again.
Directions for Use
- Scoop -- Measure 2 scoops (1g each) of powder
- Sprinkle -- Add directly to your cat's food
- Mix -- Stir in and serve
Two scoops daily. Best mixed with wet food. For dry food, add a small splash of water to help the powder stick.
Shipping & Guarantee
Shipping Free shipping on orders over $75. Orders are processed within 1-2 business days and delivered within 2-4 business days from our US warehouse.
60-Day Satisfaction Guarantee Try it risk-free. If you're not completely satisfied within 60 days, contact us for a full refund, no questions asked.
Why Pet Owners Trust PetLonga
Vet Formulated
Third-Party Tested
Proven Ingredients
Made in USA
Gut Health
Immune Support
Allergy Friendly
No Fillers
Pre + Probiotics
Norwegian Salmon
What changes when her gut heals
A balanced gut quietly fixes a lot more than the vomiting. Here is what owners notice once Gut Balance Shield is part of her daily routine.
The Cleanup Stops
No more scrubbing the carpet at 3am, or clearing the rug 20 minutes after breakfast.
Weight Back On
The ribs you could feel through her fur, covered again.
Back to Herself
Out from under the bed and back to playing, not sleeping all day.
Healthier Coat
The rough, dull fur turns soft and shiny again.
What Our Customers Say
Finally stopped scrubbing the carpet at 3am
Maple threw up almost every morning within 15 minutes of breakfast. I tried 4 different foods, 2 of them prescription, and spent more than I want to admit. By week 3 on this she went a whole week without being sick, and we are now over 2 months with nothing. I cannot tell you what it means to stop waking up to that sound.
Sarah M.
Verified Buyer
Her weight is finally back
Pepper got so thin I could feel her spine. She was hiding under the bed all day and barely eating, and I genuinely thought I was going to lose her. We are 6 weeks in. She has put the weight back on, her coat is soft again, and she is back on the windowsill where she belongs.
John D.
Verified Buyer
I caught it before it became something worse
My first cat ended up with IBD after years of "he is just a puker." When my second cat started throwing up the exact same way, I did not wait around. Started her on this straight away. The vomiting settled within a few weeks and she never got a diagnosis. I only wish I had known about it for the first one.
Emma L.
Verified Buyer
Finally, no more morning mess
My cat Biscuit threw up almost every morning right after breakfast, always on the rug of course. I had been to 3 vets, spent a fortune on tests that all came back normal, and switched her food more times than I can count. Nothing stuck. About 3 weeks on this and the morning vomiting just stopped. We are 2 months in now and the carpet has stayed clean. I only wish I had found it sooner.
Mom of Bella
Verified Buyer
Different ingredients. Different jobs.
Nothing in the jar is filler, every part of the formula solves a different piece of the problem.
PROBIOTICS
Crowds out bad bacteria
Six-Strain Probiotic Blend · 500M CFU
Reseeds her gut with the right bacteria and pushes out the strains producing toxins. Led by L. plantarum, the only strain in our blend with published feline research.
PREBIOTICS
Feeds the new colony
Inulin from Artichoke
A natural prebiotic fiber that fuels the good bacteria so they stay established, the step most cheap probiotics skip entirely.
ENZYMES
Stops toxins at the source
Pancreatin Fungal 4X
Breaks down protein, carbs, and fats before bad bacteria can ferment them into the toxins driving the gut imbalance.
GUT LINING REPAIR
Seals and soothes the lining
Marshmallow Root
Forms a protective coating over the torn gut lining so it can heal, and stops the toxins that were leaking through from reaching her bloodstream.
PROBIOTICS
Crowds out bad bacteria
Six-Strain Probiotic Blend · 500M CFU
Reseeds her gut with the right bacteria and pushes out the strains producing toxins. Led by L. plantarum, the only strain in our blend with published feline research.
PREBIOTICS
Feeds the new colony
Inulin from Artichoke
A natural prebiotic fiber that fuels the good bacteria so they stay established, the step most cheap probiotics skip entirely.
ENZYMES
Stops toxins at the source
Pancreatin Fungal 4X
Breaks down protein, carbs, and fats before bad bacteria can ferment them into the toxins driving the gut imbalance.
GUT LINING REPAIR
Seals and soothes the lining
Marshmallow Root
Forms a protective coating over the torn gut lining so it can heal, and stops the toxins that were leaking through from reaching her bloodstream.
Her Gut Reset Journey
Real, gradual change. Here's what most owners notice once Gut Balance Shield is part of her daily bowl.
Week 1
Digestion begins to improve
Her gut starts responding
Weeks 2–3
The episodes get further apart
She holds more meals down
Weeks 4–6
The weight starts coming back on
More play, less hiding under the bed
Week 8+
The vomiting has stopped or become rare
Daily use keeps the bad bacteria from taking back over
84% of long-term users continue Gut Balance Shield as daily maintenance.
Feature
PetLonga
Basic Probiotics
Adds beneficial bacteria
Feeds good bacteria
Seals and soothes the gut lining
Taste cats like
Made for cats
PetLonga vs. Basic Probiotics
Complete Gut Support
Combines probiotics, prebiotics, enzymes, and targeted nutrients in one daily formula.
Feeds Good Bacteria
Prebiotics help nourish the beneficial bacteria already living in your cat's gut.
Supports Digestion
Digestive enzymes help your cat break down food and get more from each meal.
Made for a Settled Stomach
Designed to support digestion, calm the gut, and keep meals where they belong.
Try PetLonga Risk-Free
60-day money-back guarantee
Why pet owners trust PetLonga
Vet-Formulated
Vet-Formulated
Third-Party Tested
3rd-Party Tested
Clinical-Grade Ingredients
Clinical-Grade
Made in the USA
Made in USA
No Fillers
No Artificial Flavors
Non-GMO
Gut-Friendly
Made for Cats Only
Easy Daily Powder
Got Questions? Here's What Cat Owners Ask Most
What benefits can I expect to see in my cat?
Most owners see the episodes space out within the first 2 to 3 weeks, with the vomiting stopping or becoming rare by around week 8. Alongside that, the weight comes back, the coat improves, and she gets her energy back as the gut settles.
Are your cat supplements easy to use?
Very. It is a fine fish-flavored powder. You stir 2 scoops into whatever she already eats, wet or dry, and most cats do not even notice it. No pills, no fuss.
Do I have to sign up for a subscription?
No. Every option is a one-time purchase. Buy a single jar or stock up with a bundle, there is no auto-billing and nothing to cancel.
Is this formula science-backed?
Yes. It is built around feline gut microbiome research, led by L. plantarum, the strain with published feline data, and combines probiotics, a prebiotic, digestive enzymes, and gut-lining support in one formula.
Do you offer free shipping?
Yes, on orders over $74.95, shipping is completely free.
Most customers qualify by stocking up with 2 jars, which also ensures you don't run out mid-routine.
Orders under $74.95 ship at a flat rate calculated at checkout.
How does the 60-day money-back guarantee work?
Simple. If you're not happy, you get your money back.
Try it for up to 60 days. If you don't see a difference in your cat, or you're not satisfied for any reason, just reach out to our support team.
No hoops to jump through. No awkward questions. We'll refund your purchase.
We offer this because we're confident in the formula. Most customers see real results. But if it's not the right fit for your cat, you shouldn't be stuck paying for it.