Quick answer
Our top pick is AyurPet GoodGut+, daily Ayurvedic digestive drops with Triphala, ginger, fennel and milk thistle, rated 4.7 stars from 51 reviews, for sensitive stomachs, gas and irregular stools. For a bout of diarrhoea, a named-strain probiotic such as FortiFlora (SF68) is a sensible add-on; psyllium suits chronic soft stools; enzymes help only pancreatic insufficiency.
Key takeaways
- Our top pick: GoodGut+, a 10-herb Ayurvedic liquid for everyday digestive support, rated 4.7 stars by 51 customers.
- Probiotics are modest helpers. A 2019 systematic review of 17 dog studies found only a very limited and possibly clinically unimportant effect on acute digestive upsets.
- Psyllium helped 90% of 22 police dogs with chronic large-bowel diarrhoea in an uncontrolled study.
- Enzymes did not improve digestion in healthy dogs in a controlled study, but they are essential for dogs with exocrine pancreatic insufficiency.
- Diarrhoea with blood, vomiting, weakness or lasting more than two days needs a vet.
How we chose the best digestive supplements for dogs
We judged every product, including ours, on five questions that matter more than marketing.
- Is the strain or ingredient named, with research in dogs? "Probiotic blend" is not enough; a named strain such as SF68 can be checked.
- Does the label give a count (CFU) and amounts? CFU means colony-forming units, the number of live bacteria.
- Is it the right tool for the problem? Probiotics, fibre and enzymes do different jobs.
- Is it easy to dose for your dog's size?
- Is the brand transparent about evidence?
Probiotics vs prebiotics vs digestive enzymes for dogs: what is the difference?
Probiotics are live bacteria or yeasts that may support a healthy gut. Prebiotics are fibres, such as fructooligosaccharides (FOS) and inulin, that feed gut bacteria. Digestive enzymes break food down into absorbable nutrients. Fibre such as psyllium firms stools and supports gut bacteria. They are not interchangeable.
| Type | What it is | Best evidence in dogs | Best for |
|---|---|---|---|
| Probiotic | Live microbes, such as E. faecium SF68 or Bifidobacterium | Small benefits in some trials; reviews call the overall effect limited | Short-term support during or after diarrhoea, stress or diet change |
| Prebiotic | Fibres that feed gut bacteria (FOS, inulin, GOS) | Few clinical trials of prebiotics alone | Usually as part of a probiotic or diet |
| Soluble fibre | Psyllium husk, specific fibres in veterinary diets | Uncontrolled studies in chronic large-bowel diarrhoea | Ongoing soft stools, straining, mucus |
| Digestive enzymes | Protease, lipase, amylase (animal or plant) | No benefit in healthy dogs; essential in pancreatic insufficiency | Dogs diagnosed with exocrine pancreatic insufficiency (EPI) |
| Ayurvedic digestive herbs | For example ginger, fennel, cumin, Triphala | Traditional use; we found no controlled dog trials | Daily support for sensitive stomachs, alongside vet care |
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Digestive supplements for dogs
Four tools, four different jobs
Probiotics, prebiotics, fibre and enzymes are not interchangeable. Match the tool to the problem.
Probiotics
What it is: live microbes, such as E. faecium SF68
What it does: may modestly shorten some bouts of diarrhoea
Best for: short-term upsets, stress, diet change
Prebiotics
What it is: fibres such as FOS, inulin and GOS
What it does: feed the gut bacteria already there
Best for: usually combined with a probiotic or diet
Soluble fibre
What it is: psyllium husk, fibre-enriched vet diets
What it does: firms stools and supports gut bacteria
Best for: ongoing soft stools, straining, mucus
Enzymes
What it is: protease, lipase, amylase
What it does: break food into absorbable nutrients
Best for: dogs diagnosed with pancreatic insufficiency (EPI)
Sources: Jensen & Bjornvad 2019; Alves et al. 2021; Villaverde et al. 2017. Ask your vet which tool suits your dog.
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Do probiotics actually work for dogs?
Probiotics may shorten some bouts of diarrhoea in dogs, but the effect in studies is small and inconsistent. The best evidence is for specific, well-studied strains used for short-term upsets, not for long-term "gut health" claims.
A 2019 systematic review in the Journal of Veterinary Internal Medicine found 17 studies of probiotics for digestive disease in dogs. Most had moderate to high risk of bias and small samples. The authors concluded the data point to "a very limited and possibly clinically unimportant effect" for acute digestive disease, and that for chronic disease, diet remains the key treatment while probiotics did not add significant improvement.
Individual trials show why. In a 2019 randomised, placebo-controlled trial of 60 dogs with acute diarrhoea, dogs on a probiotic reached normal stools in 3.5 days on average, versus 4.6 days on the antibiotic metronidazole and 4.8 days on placebo. Encouraging, but not statistically significant. A placebo-controlled shelter study of SF68 helped cats (7.4% versus 20.7% with diarrhoea of two days or more) but showed no difference in dogs.
Quality is a second problem. When researchers tested 25 veterinary probiotic products, only 4 of the 15 that claimed a specific count actually met it, and only 2 of 25 had both an acceptable label and the claimed count (Weese and Martin, 2011). It is why we favour brands that name their strains.
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Digestive supplements for dogs
What the studies actually show
The numbers behind the most common gut supplements for dogs.
● More bars = stronger evidence in dogs ● Gold = not supported or caution
Probiotics overall systematic review
17 dog studies: a very limited, possibly clinically unimportant effect on acute upsets.
Probiotic for diarrhoea trial of 60 dogs
Normal stools in 3.5 days vs 4.8 on placebo; not statistically significant.
Label accuracy 25 vet probiotics
Only 2 of 25 had an acceptable label and the count they claimed.
Psyllium fibre 22 police dogs
90% had a good or very good response. No control group.
Pumpkin fibre content
Nearly 12 cups a day for a medium dog to match a high-fibre vet diet.
Enzymes, healthy dogs 14 beagles
No improvement in digestion. Routine use not recommended.
Enzymes, EPI diagnosed dogs
Essential treatment, prescribed by your vet.
Sources: Jensen & Bjornvad 2019; Shmalberg et al. 2019; Weese & Martin 2011; Alves et al. 2021; Tufts (Freeman) 2017; Villaverde et al. 2017.
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What is the best probiotic for dogs with diarrhoea?
For simple, short-lived diarrhoea in an otherwise bright dog, a single-strain probiotic with a long research history, such as Enterococcus faecium SF68 in Purina FortiFlora, is a sensible first choice. Multi-strain products such as Proviable are reasonable alternatives. None replaces a vet check when red flags are present.
VCA's vets advise checking with your vet first, because probiotic quality varies (VCA). Give fresh water freely, and when stools return to normal, move back to your dog's regular food gradually over seven to ten days.
The best digestive supplements for dogs, compared
GoodGut+ is our top pick for everyday digestive support. The alternatives below are good choices for specific jobs, verified on each brand's own website.
#1 Our top pick · Best overall
AyurPet GoodGut+ digestive drops
Why it leads
- A complete Ayurvedic digestive formula: Triphala, milk thistle, Bhumi Amla, Yashtimadhu (liquorice), slippery elm, Bhringraj, ginger, fennel, cumin and black pepper, for the gut and the liver.
- Made for the everyday "sensitive stomach": gas after meals, stools that come and go, a picky appetite.
- Liquid drops: nothing to break down first, and easy to mix into food for any size of dog.
- Clean label: human-grade ingredients, lab tested and certified, no added chemicals, vet and pet approved.
Rated 4.7 stars from 51 customer reviews.
GoodGut+ is not a probiotic, and it is not a treatment for acute diarrhoea or pancreatic insufficiency; see the red flags below.
See GoodGut+| Product | Type and format | Key contents (brand-listed) | Best for |
|---|---|---|---|
|
AyurPet GoodGut+ #1 OUR TOP PICK |
Liquid drops | Ayurvedic digestive herbs: Triphala, milk thistle, Bhumi Amla, Yashtimadhu, slippery elm, Bhringraj, ginger, fennel, cumin, black pepper | Best overall: daily support for sensitive stomachs, gas and irregular stools |
| Purina Pro Plan Veterinary Supplements FortiFlora | Probiotic powder sachet | E. faecium SF68, 1 x 108 CFU per sachet (US label) | Short-term diarrhoea; single, well-studied strain; sold by Petzone UAE |
| Proviable-DC (Nutramax) | Probiotic sprinkle capsule | 7 named strains, at least 5 billion CFU per capsule, plus FOS | Multi-strain support after diet change, travel or kennelling |
| Zesty Paws Probiotic Bites | Soft chew | Bacillus coagulans, B. subtilis, Saccharomyces boulardii (6 billion CFU on panel) plus 50 mg FOS | Treat-motivated dogs who need daily support |
| PetLabCo. Probiotic Chews | Soft chew | 3 billion CFU Bacillus blend, FOS 100 mg, GOS 100 mg, postbiotic yeast 75 mg per chew | Owners who want pre-, pro- and postbiotics in one chew |
| Native Pet Probiotic | Powder | 4 strains, 6 billion CFU per scoop, with pumpkin seed and inulin | Picky eaters; mixes into food |
| Plain psyllium husk | Soluble fibre powder | Psyllium (ispaghula) husk, no additives | Chronic soft stools and straining, with vet guidance |
The alternatives: pros and cons
Pros: one named strain with published dog and cat studies; one sachet a day for any size; widely stocked by vets, including in the UAE. Cons: the dog evidence is mixed, and the US label lists a lower count (1 x 108 CFU) than some multi-strain products.
Pros: seven strains named down to strain code, plus a prebiotic. Cons: multi-strain does not automatically mean more effective, and we found no independent trials of this exact product in the sources we reviewed.
Pros: tasty chew that also includes a prebiotic (FOS). Cons: the brand's own page lists 6 billion CFU on the panel but 3 billion per chew in the description, and the formula has recently changed, so retailer descriptions may be out of date.
Pros: clear amounts for prebiotics and postbiotics. Cons: the strains are named in the FAQ rather than on the panel, and its headline results figure comes from a subscriber survey.
Pros: beef-broth powder most dogs accept; easy to adjust. Cons: no supplement facts panel with amounts per prebiotic on the page we checked.
Pros: inexpensive, and far more concentrated in soluble fibre than pumpkin. Cons: dose needs a vet's input, and must be given with plenty of water.
How much probiotic should I give my dog?
Give the amount on the label for your dog's weight. Most chews dose by weight band, while powders and capsules are often one serving a day for any size. The table converts brand label instructions into kilograms and pounds.
| Product (label serving) | Up to 11 kg (25 lb) | 12 to 34 kg (26 to 75 lb) | Over 34 kg (75 lb) |
|---|---|---|---|
| FortiFlora sachet | 1 sachet | 1 sachet | 1 sachet |
| Proviable-DC capsule | 1 capsule | 1 capsule | 1 capsule |
| Zesty Paws Probiotic Bites | 1 chew | 2 chews | 3 chews |
| PetLabCo. Probiotic Chews | 1 chew | 2 chews | 3 chews |
| Native Pet Probiotic | 1 scoop | 1 scoop up to 23 kg (50 lb), then 2 | 2 scoops |
Start low, and talk to your vet first, especially if your dog takes medication, is pregnant, is a young puppy or has a health condition. For GoodGut+ or any AyurPet product, follow the dosage on the pack.
Is pumpkin or fibre good for dogs with an upset stomach?
Plain pumpkin is safe for most dogs but contains very little fibre, so the spoonful many owners add probably does little. Psyllium husk delivers far more soluble fibre and has better, though still limited, evidence for chronic soft stools.
Tufts veterinary nutritionist Dr Lisa Freeman estimates that matching the fibre in one high-fibre veterinary diet would take nearly 12 cups of pumpkin a day for a medium-sized dog, and warns that pumpkin pie mix adds sugar and some canned pumpkin adds a lot of salt (Tufts). For psyllium, a 2021 study of 22 police working dogs with chronic large-bowel diarrhoea found a "very good" response in 50% and a "good" response in 40% after a month of psyllium, though there was no control group. If stools are often soft, ask your vet about psyllium or a fibre-enriched diet. Our home remedies for a dog's upset stomach covers safe short-term care.
Do digestive enzymes help dogs?
Digestive enzymes are essential for dogs with exocrine pancreatic insufficiency (EPI), a condition where the pancreas stops producing enough enzymes. For healthy dogs, the evidence does not show a benefit.
In a 2017 controlled study of 14 healthy adult beagles, neither plant-origin nor animal-origin enzyme supplements improved digestion of protein, fat or energy from a commercial dry diet, so routine use in healthy dogs is not recommended. EPI is diagnosed with a blood test, and enzymes are prescribed by your vet.
What is a good gut health supplement for dogs long term?
For long-term gut health, the strongest foundation is a complete, consistent diet that suits your dog, with changes made slowly. Supplements are worth considering for dogs with sensitive stomachs, recurring gas or soft stools once a vet has ruled out parasites, infection, food intolerance and other disease.
Ayurveda has thought about digestion for millennia. Health starts with agni, the "digestive fire", and herbs that kindle and steady it are called deepana-pachana herbs: ginger, cumin, fennel and black pepper. Triphala, a blend of three fruits (amalaki, bibhitaki and haritaki), is the classic daily tonic for regularity, and even psyllium has an Ayurvedic name, isabgol. What science is finding: research is still catching up with tradition, and controlled dog trials of these herbs for digestion have not yet been published, so they work best as daily support once a vet has ruled out disease.
AyurPet's take
We believe Ayurveda's way of tending agni every day is the right long-term approach to a sensitive stomach, which is why GoodGut+ is our top pick. Choose it for the right job: for acute diarrhoea, call your vet and consider a named-strain probiotic like SF68; for diagnosed EPI, you need prescription enzymes; for chronically soft stools, ask about psyllium or a fibre-enriched diet. Where GoodGut+ shines is daily, gentle support once serious causes are ruled out.
When should I see a vet about my dog's digestion?
Call your vet promptly if your dog has:
- Bloody diarrhoea, or diarrhoea with vomiting, weakness, fever, abdominal pain or loss of appetite
- Frequent liquid stools for more than two days, or no improvement after two days of home care
- Signs of dehydration, or weight loss
- Diarrhoea as a puppy or an unvaccinated dog, because parvovirus can be life-threatening
These warning signs come from VCA's guidance on diarrhoea in dogs. AyurPet also offers an online vet consultation if you want advice quickly.
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Digestive supplements for dogs
Diarrhoea: home care or vet?
Call your vet now if
- There is blood, or vomiting, weakness, fever or belly pain
- Liquid stools last more than two days
- There are signs of dehydration or weight loss
- Your dog is a puppy or unvaccinated (parvovirus risk)
If it is mild and your dog is bright
- Keep fresh water available at all times
- Ask your vet about a short pause and a bland or GI diet
- A named-strain probiotic may help a little
- Return to normal food over 7 to 10 days
No improvement within two days of home care? It is time for a vet check.
Based on VCA Animal Hospitals, 'Diarrhea in Dogs' (Barnes, Llera, Williams, Ward). Not a substitute for veterinary advice.
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Frequently asked questions
What is the best probiotic for dogs?
Choose a product that names its strain and CFU count, ideally a strain with dog research such as Enterococcus faecium SF68. Reviews find probiotics have only modest effects, so use them as support, not as a replacement for a vet check.
Can I give my dog human probiotics?
It is better to use a product made for dogs, with a dose for their size and no xylitol or other additives. Ask your vet before using a human product.
How long does it take for a probiotic to work in dogs?
In a 2019 trial of dogs with acute diarrhoea, dogs on a probiotic reached normal stools in about 3.5 days on average versus 4.8 on placebo, a difference that was not statistically significant. If diarrhoea lasts more than two days, see your vet.
Are prebiotics or probiotics better for dogs?
They do different jobs. Probiotics add live microbes; prebiotics feed the ones already there. Many products combine both, and neither has strong evidence on its own for long-term use in healthy dogs.
Is pumpkin good for dog diarrhoea?
Plain pumpkin is usually safe, but it contains little fibre. Tufts nutritionists estimate a medium dog would need nearly 12 cups a day to match a high-fibre veterinary diet. Avoid pumpkin pie filling and salted products.
Do dogs need digestive enzymes?
Healthy dogs make their own; a controlled study found enzyme supplements did not improve digestion in healthy dogs. Dogs with exocrine pancreatic insufficiency need enzyme replacement prescribed by their vet.
Can gut problems cause itching in dogs?
There is growing research on a gut-skin link in dogs, but it is early. Food allergy can cause both itchy skin and digestive signs. Read our guide to supplements for dogs with itchy skin for the evidence.
Digestive signs can have many causes. Check with your vet before starting a supplement, and seek help quickly if you see any red flags.
How we researched this: Written by the AyurPet research team from 10 sources listed below, including peer-reviewed studies, veterinary references and brand product pages checked on 20 October 2026. Last reviewed October 2026.
References
- Clinical effect of probiotics in prevention or treatment of gastrointestinal disease in dogs: a systematic review (Jensen AP, Bjornvad CR). Journal of Veterinary Internal Medicine 33(5):1849-1864, 2019. https://doi.org/10.1111/jvim.15554
- A randomized double blinded placebo-controlled clinical trial of a probiotic or metronidazole for acute canine diarrhea (Shmalberg J, Montalbano C, Morelli G, Buckley GJ). Frontiers in Veterinary Science 6:163, 2019. https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2019.00163/full
- Effect of the probiotic Enterococcus faecium SF68 on presence of diarrhea in cats and dogs housed in an animal shelter (Bybee SN, Scorza AV, Lappin MR). Journal of Veterinary Internal Medicine 25(4):856-860, 2011. https://doi.org/10.1111/j.1939-1676.2011.0738.x
- Assessment of commercial probiotic bacterial contents and label accuracy (Weese JS, Martin H). Canadian Veterinary Journal 52(1):43-46, 2011. https://pmc.ncbi.nlm.nih.gov/articles/PMC3003573/
- Diarrhea in Dogs (Barnes C, Llera R, Williams K, Ward E). VCA Animal Hospitals, 2026. https://vcahospitals.com/know-your-pet/diarrhea-in-dogs
- People like giving pets pumpkin, but is it good for them?. Tufts Now, Tufts University, 2017. https://now.tufts.edu/2017/10/03/people-giving-pets-pumpkin-it-good-them
- The use of soluble fibre for the management of chronic idiopathic large-bowel diarrhoea in police working dogs (Alves JC, Santos A, Jorge P, Pitaes A). BMC Veterinary Research 17:100, 2021. https://pmc.ncbi.nlm.nih.gov/articles/PMC7923632/
- Effect of enzyme supplements on macronutrient digestibility by healthy adult dogs (Villaverde C, Manzanilla EG, Molina J, Larsen JA). Journal of Nutritional Science 6:e12, 2017. https://pmc.ncbi.nlm.nih.gov/articles/PMC5465853/
- Pro Plan Veterinary Supplements FortiFlora Canine product page. Purina (brand site), 2026. https://www.purina.com/dogs/shop/pro-plan-veterinary-supplements-fortiflora
- Proviable-DC Capsules for dogs product page. Nutramax Laboratories (brand site), 2026. https://www.proviable.com/proviable-dc-capsules-for-dogs