Syntro Gut & Digestion Soft Chews for Dogs
A calm, regular tummy with one tasty chew a day. For dogs with loose stools, gas or a sensitive stomach.
- Firmer, more regular stools. Less gas and fewer upset-tummy days.
- 3 billion CFU of spore-forming probiotics. Plus two prebiotic fibres and a postbiotic yeast blend.
- Most owners see a change in 1–2 weeks. The gut keeps rebalancing over 60–90 days.
- 1 to 3 chews a day, by weight. A pork-liver chew dogs take like a treat.
ON EVERY ORDER
ONE-TIME PURCHASE
BACK GUARANTEE
🔥 Selling fast: only 68 jars left at this price
Give it three full months. If you don't see a happier tummy, we'll refund your first order. No return required.
Who Is It Designed For?
If your dog has soft or loose stools on and off, gas that clears the room, a tummy that gurgles at night, eats grass on every walk, sniffs the bowl and walks away, or gets an upset stomach every time the food, the routine or the season changes — this was made for them.
It's not a sensitive stomach. It's gut balance. Your dog's gut is home to trillions of bacteria that digest food, keep stools firm and support the immune system. Food switches, antibiotics, stress, scavenging and age knock that balance off, and the tummy is the first to show it.
Rice and chicken settles one bad day. This supports the gut every day: 3 billion CFU of spore-forming probiotics, two prebiotic fibres and a postbiotic yeast blend, in a pork-liver soft chew your dog takes like a treat.
Made for dogs of every breed and size from 12 weeks old, puppies to seniors — and for dog parents who want a calm, happy tummy without mixing powders or hiding pills.
The 6 Things This Formula Was Built For
Four gut actives, six jobs — each one mapped to something you see every day. Not a new food. Not a powder to mix.
1. Firm, regular stools. Spore-forming probiotics and two prebiotic fibres help maintain the gut balance behind normal stool consistency.
2. Comfortable digestion. Supports digestion with less gas, bloating and tummy gurgling.
3. A steady tummy through changes. Helps keep the good bacteria topped up through food switches, travel, kennels and busy weeks (after antibiotics, ask your vet about timing).
4. A healthy appetite. A settled gut supports normal appetite, so picky eaters and grass grazers have less reason to skip meals.
5. Immune support from the gut. Most of a dog's immune system sits in the gut. The postbiotic yeast blend supports the gut lining and normal immune function.
6. Easy to give. A soft, pork-liver flavoured chew from human-grade ingredients. No powders, no pill pockets, no fuss.
How It Works
Your dog's gut is an ecosystem of trillions of bacteria. When the helpful ones are in charge, food is digested properly, stools are firm and the immune system is supported. Most "sensitive stomachs" aren't about the food bowl. They're about what's happening in the gut.
What's actually happening:
Food switches, antibiotics, stress and scavenging knock the good bacteria back → less helpful bacteria take over.
Food ferments instead of digesting → gas, bloating and gurgling.
The gut doesn't hold water and fibre as it should → soft or loose stools, grass eating and skipped meals.
Why what you've tried hasn't fixed it:
Rice and chicken settles one bad day, then it starts again.
Switching food again is one more change for an unsettled gut.
Probiotic powders need mixing, get left in the bowl, and many strains don't survive stomach acid.
Pumpkin or yoghurt adds a little fibre, but does nothing for the balance of bacteria.
How Syntro Gut & Digestion works differently. Three layers of support in one tasty chew:
✓ 3 billion CFU of spore-forming probiotics (Bacillus coagulans, B. subtilis, B. clausii) — spores are built to survive stomach acid and become active in the gut.
✓ Two prebiotics, FOS and GOS — fibres that feed the good bacteria.
✓ A postbiotic yeast blend — supports the gut lining and normal immune function.
✓ A pork-liver soft chew — dogs take it like a treat, so you never miss a day.
1–3 chews a day, by weight. That's it.
What to Expect — Your First 90 Days
Here's what dog parents typically report. The gut rebalances gradually, so give it one to two weeks of daily chews for the first changes — some notice sooner.
Days 1–14 — the settling-in phase. The probiotics reach the gut every day and the prebiotics start feeding the good bacteria. Many dog parents see firmer, more regular stools by the end of week two.
Weeks 2–4 — the balance phase. Gas and gurgling ease off, and the upset-tummy days get rarer, even after a scavenging walk or a change in routine.
Weeks 4–8 — the happy-tummy phase. Stools stay firm, appetite comes back and many dogs eat less grass. Mealtimes stop being a negotiation.
Days 60–90 — the new-normal phase. The support builds: a calm, regular tummy becomes your dog's normal. This is when dog parents stop planning their day around their dog's tummy.
Food switches, travel, stress and age keep testing the gut. The daily chew keeps supporting it. That's why most dog parents keep going past the first jar.
How To Use
Give the daily amount for your dog's weight, by hand as a treat or crumbled over food:
Under 25 lb (11 kg): 1 chew a day
25–75 lb (11–34 kg): 2 chews a day
Over 75 lb (34 kg): 3 chews a day
For all breeds and sizes, from 12 weeks old. Each jar holds 60 soft chews: 30 days for a dog on 2 chews a day (60 days for a small dog, 20 days for a large one). Keep fresh water available. Store in a cool, dry place and reseal the jar after use.
This is a complementary feed for dogs, not a medicine, and it doesn't replace a balanced diet or your vet's advice. Do not exceed the daily amount. If your dog is pregnant, nursing, on medication or under treatment, ask your vet first. If loose stools last more than 48 hours, or there is vomiting, blood or your dog seems unwell, see your vet. Not for cats. Keep out of reach of children.
Shipping & Returns
Orders leave our warehouse within 1 business day and most arrive in 3 to 5 business days. You'll get a tracking number by email the moment it ships. Free shipping on every order — your price at checkout is the final price.
Covered by our 90-day money-back guarantee. No return required, no questions asked.
What dog parents report after 4 weeks on Syntro Gut & Digestion
What dog parents are actually saying
“A year of soft stools and food switches. Ten days on these, and Bella was back to normal.”
Sarah M. & Bella · Loose stools“She eats everything on walks. Now the upset-tummy days are rare instead of weekly.”
Emily R. & Luna · Upset tummy“Charlie is 11. He takes his chews happily, he's regular, and he finishes his bowl again.”
Linda K. & Charlie · Senior digestionIt's Not a Sensitive Stomach. It's Gut Balance.
Soft or Loose Stools That Keep Coming Back
3 billion CFU of spore-forming probiotics in every chew, plus two prebiotic fibres, help restore the gut balance behind firm, regular stools.
Gas, Bloating & Tummy Gurgling
When less helpful bacteria take over, food ferments instead of digesting. Rebalancing the gut supports comfortable digestion, with less gas and quieter nights.
Upset Tummy After Food Switches, Travel or Antibiotics
Changes in food, routine or medication knock the gut off balance. A daily chew helps keep the good bacteria topped up through every change.
Grass Eating & Picky Mealtimes
Dogs often eat grass or skip meals when their tummy feels off. A settled gut supports a healthy appetite, so mealtimes get easier.
Four Gut Actives. One Tasty Chew.
Probiotic Blend 3B CFU
Three spore-forming Bacillus strains (B. coagulans, B. subtilis, B. clausii). Spores are built to survive stomach acid and become active in the gut.
FOS Prebiotic 100 mg
Fructooligosaccharides: a plant fibre that feeds the good bacteria already living in your dog's gut and supports digestive comfort.
GOS Prebiotic 100 mg
Galactooligosaccharides: a second prebiotic fibre that supports normal stool consistency and a healthy balance of gut bacteria.
Postbiotic Yeast Blend 75 mg
Two fermented yeasts that support the gut lining and normal immune function, where most of the immune system lives.
Sweet Potato & Chickpea Base
A real-food base with gentle natural fibre, plus coconut and sunflower oil, so every chew is soft, easy to digest and easy to break for small dogs.
Real Pork Liver Flavour
A tasty soft chew dogs take like a treat. No powders to mix, no pills to hide, no fuss at breakfast.
Your Dog's First 90 Days on Syntro Gut & Digestion
By day ten, Bella's stools were firm again. I honestly didn't expect anything that quickly.
Days 1–14
The settling-in phase
The spore-forming probiotics reach the gut every day and the prebiotics start feeding the good bacteria. Many dog parents see firmer, more regular stools within the first one to two weeks.
- 🐾 Firmer stools
- 🌿 Calmer tummy
- 😋 Takes it like a treat
Around week three I realised we'd gone a whole fortnight without an upset-tummy day.
Weeks 2–4
The balance phase
As the gut bacteria rebalance, gas and tummy gurgling ease off and upset-tummy days get rarer, even after a scavenging walk or a change in routine.
- ⚖️ Gut in balance
- 🌙 Quieter nights
- 🦴 Fewer upset days
Six weeks in, the gas was so much better that my partner asked what I'd changed.
Weeks 4–8
The happy-tummy phase
With a steadier gut, stools stay firm and appetite comes back, and many dogs eat less grass. This is when dog parents stop planning their day around their dog's tummy.
- 🍽️ Easier mealtimes
- 🌱 Less grass eating
- 🐕 Happier walks
Month three. Daisy finishes her bowl and asks for her chew. Mealtimes aren't a battle anymore.
Days 60–90
The new-normal phase
Food switches, travel, stress and age keep testing your dog's gut, and the daily chew keeps supporting it. Kept up, a calm, regular tummy becomes their normal. This is why most dog parents keep going past the first jar.
- 📈 Results that last
- 🛡️ Gut & immune support
- 🔁 A routine you'll keep
Not a Bland Diet. Not Just Any Powder.
Syntro Gut & Digestion
Bland Diets & Powders
Made For One Job: A Happy Gut
Most dog parents are told their dog just has a sensitive stomach, and end up switching foods, cooking rice and chicken and hoping for the best. Usually the real issue is gut balance. Syntro Gut & Digestion isn't a new food and it isn't a powder to mix. It's a daily chew that supports the good bacteria in your dog's gut. Here's what dog parents report after 4 weeks.
Figures are owner-reported, drawn from post-purchase feedback and reviews — not a clinical trial. Individual results vary. Syntro Gut & Digestion is a complementary feed for dogs, not a veterinary medicine, and it does not replace a balanced diet or your vet's advice and treatment. See your vet if loose stools last more than 48 hours, if there is vomiting or blood, if your dog seems unwell, or if your dog is pregnant, nursing or on medication. Not for cats. Keep out of reach of children.
Try It Risk-Free for 90 Days
Give it three full months. If you don't see a happier tummy, email us and we'll refund your first order. No return required. No questions asked.
Questions About Syntro Gut & Digestion
Why does my dog keep getting an upset tummy?
Usually it's gut balance, not a "sensitive stomach". Your dog's gut is home to trillions of bacteria, and food switches, antibiotics, stress, scavenging on walks and age all knock the helpful ones back. When less helpful bacteria take over, you see soft stools, gas, gurgling, grass eating and skipped meals.
Syntro Gut & Digestion supports that balance every day with spore-forming probiotics, two prebiotic fibres and a postbiotic yeast blend. If loose stools last more than 48 hours, or there is vomiting, blood or your dog seems unwell, see your vet.
My dog just finished antibiotics. Can they have this?
Antibiotics are one of the most common reasons a dog's gut gets knocked off balance, and many dog parents use a daily probiotic during and after a course. Check with your vet first about timing, especially while the course is still running, and never stop or change a treatment your vet prescribed.
Spore-forming probiotics are built to survive stomach acid, and the prebiotics feed the good bacteria as they settle back in.
My dog eats grass and is a picky eater. Will this help?
Many dog parents tell us it does. Dogs often graze on grass or turn their nose up at dinner when their tummy feels off. A settled gut supports a healthy appetite, and the pork-liver chew itself is something most picky eaters happily accept.
Give it 2–4 weeks of daily chews. If your dog suddenly stops eating, loses weight or seems unwell, see your vet.
Can my dog take this with medication or other supplements?
It can generally be given alongside your dog's usual food and most other supplements. If your dog is on medication or under treatment, ask your vet first: absorption of medicines taken at the same time may be delayed, so your vet may suggest giving them at different times. Never stop or change a treatment your vet prescribed.
Is this a medicine or a food?
Neither a medicine nor a meal. It's a complementary feed: a daily soft chew that supports your dog's digestion and gut balance alongside a balanced diet. It doesn't replace your dog's food or your vet's advice.
What's actually inside it?
Per soft chew: 3 billion CFU of spore-forming probiotics (Bacillus coagulans, B. subtilis, B. clausii), 100 mg FOS and 100 mg GOS (prebiotic fibres) and 75 mg of a postbiotic yeast blend (Saccharomyces cerevisiae, Cyberlindnera jadinii). The chew itself is made with sweet potato, chickpea, pork liver, coconut and sunflower oil, apple cider vinegar and rosemary extract. 60 soft chews per jar.
Is it safe for puppies, seniors and small dogs? Can cats have it?
It's made for dogs of every breed and size from 12 weeks old, puppies to seniors — just follow the weight table, and break the chew for very small dogs if you like. If your dog is pregnant, nursing, intended for breeding, on medication or under treatment, ask your vet first. It's made for dogs only, so please don't give it to cats.
I've already tried other things. Why would this be different?
Because most of what you've tried settles one bad day, or never reaches the balance of bacteria behind it. Rice and chicken calms the tummy for a day or two. Switching food again is one more change. Pumpkin or yoghurt adds a bit of fibre. Many probiotic powders get left in the bowl, and their strains don't always survive stomach acid. Syntro Gut & Digestion gives 3 billion CFU of spore-forming probiotics, two prebiotics and a postbiotic every day, in a chew your dog actually wants.
How quickly will I notice a difference?
Many dog parents see firmer, more regular stools within 1–2 weeks. Less gas and fewer upset-tummy days usually follow over 2–4 weeks, and appetite and grass eating over 4–8 weeks. The full benefit builds over 60–90 days of daily chews — and you have 90 full days to decide, risk-free.
How many chews does my dog need?
It depends on your dog's weight:
Under 25 lb (11 kg): 1 chew a day
25–75 lb (11–34 kg): 2 chews a day
Over 75 lb (34 kg): 3 chews a day
Give the chews once a day, by hand or crumbled over food, at whatever time suits you. Each jar holds 60 soft chews: 30 days for a dog on 2 chews a day. Do not exceed the daily amount.
Does my dog need to keep taking it?
Food switches, travel, stress and age don't take a break, and neither does your dog's gut. Most dog parents keep giving the daily chew to hold on to the results; stop, and the support tends to fade over the following weeks. That's why the 3-jar option is the most popular.
How fast is delivery?
Orders leave our warehouse within 1 business day and most arrive in 3 to 5 business days. Free shipping on every order, and you'll get tracking by email the moment it ships.
Do I have to subscribe?
No — it's your choice. Pick Try Once for a single order: you're charged once and nothing renews. Where Subscribe & Save is offered, you get a lower price on every order, delivered on a schedule that matches your supply. You can skip, pause or cancel anytime from your account, with no fees and no minimum.
What if it doesn't work for my dog?
Then you get your money back. Our 90-day guarantee means you risk nothing: no return required, no questions asked. You've already spent money on foods, powders and remedies that didn't stick — this time, if it doesn't work for your dog, you lose nothing.
How do I reach you?
Email our support team and a real person answers. We read everything.
Real reviews from 68,124+ dog parents
Individual results vary. Reviews reflect individual experiences.