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1,215 Reviews
Petlonga Gut-Balance Shield
The gut formula for CKD cats who have stopped eating. It targets the toxins behind the nausea, the bacteria and the leaking gut lining.
Eases the nausea
Repairs the gut lining
Helps her eat again
Natural Fish-flavored
93% Sold
Ships by
From US warehouse
Ingredients
Our daily gut-kidney formula combines probiotics, a prebiotic, digestive enzymes, and gut-lining support to target the bacterial toxins that burden the kidneys and drive the nausea behind appetite loss.
Product Information
Our vet-formulated probiotic delivers 6 targeted strains and 500 million CFU, plus inulin prebiotics, digestive enzymes, omega-3 salmon oil, 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 gut lining, while 6 live probiotic strains support balanced bacteria and comfortable, regular digestion
- 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 health and energy, so your cat can feel and act like themselves
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
Appetite & Nausea Support
Targets Gut Toxins
Kidney-Focused Formula
No Fillers
Pre + Probiotics
Picky-Cat Friendly
What Changes When The Toxins Drop
When the toxin load eases, the symptoms it was driving ease with it. Here is what owners tell us they notice once Gut-Balance Shield is part of her daily bowl.
She Eats Again
Bowl down, and she finishes it. No warming, no syringe.
More Like Herself
Energy comes back. She moves around the house again.
Less Nausea
The lip-licking and bowl-walking stop.
Healthier Coat
The dull, neglected coat starts to fill back in.
What Our Customers Say
Game changer for my senior boy
My 15-year-old Winston has kidney disease and I had tried every supplement out there with no luck. This one actually works. He had basically stopped eating, and now he finishes his bowl on his own. He has so much more energy and is acting like his old self again. I am just grateful to have him back.
Sarah M.
Verified Buyer
Picky eater approved!
For months, mealtimes were a battle. Warming the food, syringes, the whole thing, and he would still walk away. Three weeks in and he started eating on his own again. No tricks. I did not think we would get back here.
John D.
Verified Buyer
The nausea finally let up
My vet said the appetite loss was nausea, not pickiness, and she was right. The constant lip-licking and walking up to the bowl and turning away has stopped. She is calmer at mealtimes and actually wants her food.
Emma L.
Verified Buyer
Numbers held at his last check
I am keeping this short. He is eating, he is more active, and his bloodwork held steady at his last appointment for the first time since the diagnosis. That is all I wanted.
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 gut 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 the uremic toxins that burden her kidneys. 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 weakened gut lining so the toxins stop leaking through into her bloodstream and reaching her kidneys.
PROBIOTICS
Crowds out bad bacteria
Six-Strain Probiotic Blend · 500M CFU
Reseeds her gut with the right bacteria and pushes out the strains producing the uremic toxins that burden her kidneys. 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 weakened gut lining so the toxins stop leaking through into her bloodstream and reaching her kidneys.
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
The good bacteria begin settling in
Digestion starts to steady
Weeks 2–3
The nausea begins to ease
She takes a few more bites on her own
Weeks 4–6
Appetite returns without the tricks
Energy and movement pick back up
Week 8+
Many owners report bloodwork held steady
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
Supports skin & coat health
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 Daily Cat Wellness
Designed to support digestion, immune balance, skin & coat health, and everyday comfort.
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
Allergen-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 cat owners notice improvements within the first 1-3 months of daily use. Common benefits include:
Improved appetite — Cats often start eating more consistently, even those who've become picky or lost interest in food.
More energy — Less lethargy, more willingness to play, and a return to normal daily activity.
Normalized drinking habits — Less excessive thirst and more balanced water intake.
Better digestion — Fewer stomach issues, more regular bowel movements, and less vomiting.
Healthier coat — Shinier, softer fur as nutrient absorption improves.
Improved comfort — A more relaxed, content cat overall.
Results vary depending on your cat's age and current kidney health. Some owners also report improved bloodwork results at vet checkups after consistent use.
Are your cat supplements easy to use?
Yes, it takes less than 30 seconds a day.
Simply add 2 scoops to your cat's food. and mix it in. That's it.
The powder blends quickly into wet or dry food with no grit or clumps. It has a natural fish flavour which even picky eaters like.
No pills to force down. No syringes. No fighting at mealtime.
Do I have to sign up for a subscription?
No, you don't have to, but we recommend it. We now offer a subscription option in addition to one-time purchases.
We introduced subscriptions because consistency is one of the most important parts of building an effective daily routine for gut support. Probiotics work best when used continuously over time, and subscriptions help make sure your cat never misses a day.
You can still choose:
- One-time purchase — no recurring charges or commitments
- Subscribe & save — automatic deliveries on your preferred schedule
The subscription is fully flexible, so you can choose the delivery frequency that works best depending on how many cats you're giving it to and how quickly you go through each jar. You can also pause, change, or cancel anytime.
What are other cat owners saying?
Cat owners are seeing real results—and sharing them:
"Her bloodwork actually improved." — Linda M. Noticed better energy, healthier coat, and improved kidney values after two months of daily use.
"Stopped the vomiting and lethargy." — James K. His cat's digestion improved within weeks, with more energy and consistent appetite.
"Prevention before it's too late." — Rachel T. Started using it proactively after losing a previous cat to kidney failure. Peace of mind knowing she's supporting her cat's kidneys early.
The most common feedback we hear: improved appetite, more energy, and cats that actually eat it without a fight.
Is this formula science-backed?
Yes. Every ingredient is selected based on published research, not trends.
The gut-kidney connection is real. Studies show that harmful compounds produced in the gut pass into the bloodstream, forcing the kidneys to work harder over time. Targeted probiotics help break down these compounds before they reach the kidneys -- reducing the burden on an already stressed system.
Our 6-strain probiotic blend delivers 500 Million CFU of strains studied for their role in gut balance, toxin metabolism, and immune support.
Prebiotic inulin (from artichoke) feeds and sustains beneficial bacteria so they actually colonize -- not just pass through.
Pancreatin Fungal 4X enzymes support complete nutrient breakdown and absorption, reducing digestive stress on your cat's system.
Pumpkin powder and marshmallow root add a soothing layer of gut support, helping maintain a calm, healthy digestive environment.
This is not a generic blend. It is a targeted formula built to support kidney health from the inside out.
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.