Food for dogs with a sensitive stomach
A dog with a sensitive stomach typically reacts more easily than most to changes in food, certain ingredients, or fatty and rich meals, showing up as loose stools, wind, or occasional sickness rather than any single dramatic symptom. The right food usually means something simpler and more consistent, with a limited, easily digested ingredient list, rather than any one miracle formula.
What 'sensitive stomach' usually means
It is a description of a pattern rather than a formal diagnosis — a dog who regularly gets loose stools, wind, or mild sickness after eating something new, fatty, or rich, more often than seems typical for other dogs. Some dogs are simply more reactive than others without there being an underlying disease driving it.
That said, recurring digestive upset is also the way several genuine health conditions present, so a pattern that keeps happening is worth ruling out properly with your vet rather than assuming it is just how your dog is built, particularly if it has developed suddenly rather than always been the case.
What to look for on a food label
A shorter, more consistent ingredient list tends to suit a sensitive stomach better than a food with a long list of varying protein sources and additives, since fewer variables mean fewer chances for something to disagree with your dog. A single named protein source, rather than a vague mix, makes it easier to identify what does or does not agree with your dog if you need to.
Foods described as easily digestible or formulated for sensitive digestion often use more digestible protein and fat sources and a controlled fibre content, both of which are relevant to a dog whose gut reacts quickly to what it is given. Consistency matters here too — switching between different foods often is itself a common trigger for digestive upset, sensitive stomach or not.
Introducing a new food properly
Any change of food should happen gradually over a week or more, mixing increasing amounts of the new food with decreasing amounts of the old, rather than switching overnight. This matters more for a dog with a known sensitive stomach than for one without, since a sudden change is one of the most common triggers of an upset in the first place.
Keep a rough note of how your dog reacts to a new food over the first couple of weeks — stool consistency, appetite, and any wind or sickness — since this is genuinely useful information if you end up discussing options with your vet.
When it needs a vet rather than a different food
Persistent or worsening digestive upset, weight loss, blood in the stool, repeated vomiting, or a dog who seems generally unwell are signs that go beyond what a food change alone is likely to fix, and are worth investigating with your vet rather than working through diets on your own.
A vet can also confirm whether an underlying condition is driving the sensitivity, since diet changes that help manage symptoms are not the same as identifying and addressing a cause. If a change of food has not improved things within a few weeks, that is a reasonable point to get your dog properly checked.
Foods formulated for this
Everything below is in stock with us, priced with delivery worked out, and packed and posted by hand in the UK.

Forthglade Cold Pressed Natural Turkey
Cold-pressed turkey kibble for dogs from 2 months, soft enough to mix with water for young pups
£45.99

Forthglade Cold Pressed Grain Free Salmon
Cold-pressed grain-free dry food for dogs, built on fresh and dried salmon
From£16.99

Forthglade Cold Pressed Grain Free Duck
Cold-pressed grain-free duck food with fruit and botanicals, in two bag sizes
From£16.99

Forthglade Cold Pressed Grain Free Chicken
Cold-pressed grain-free chicken food with fruit and botanicals, in three bag sizes
From£16.99

Forthglade Complete Meal Lightly Baked Turkey
A lightly baked complete dry food, 50% turkey, for adult dogs of any breed
From£12.49

Forthglade Complete Meal Lightly Baked Chicken
A grain-free complete dry food for adult dogs, lightly baked and built on 50% chicken
From£12.49

Forthglade Cold Pressed Small Dog Turkey
Cold-pressed grain-free dry food for small dogs and puppies, built on turkey
£16.99

Forthglade Complete Meal Lightly Baked Lamb
A lightly baked complete dry food, 50% lamb, for adult dogs of any breed
From£12.49

Forthglade Cold Pressed Grain Free Turkey
Grain-free cold-pressed turkey kibble for dogs, gentle on sensitive stomachs
£69.69

Forthglade British Classics Chicken Family Lunch
Complete Forthglade wet dog food with 75% chicken in a 395G tray
£2.45

Harringtons Puppy Turkey & Rice
Complete turkey puppy food with 30% protein and feeding bands by adult weight
£6.49

Harringtons Adult Dog Turkey Veg
Complete dry food for adult dogs with turkey, chicken and salmon oil, 21% protein
From£3.39
Common questions
- What are the signs of a sensitive stomach in dogs?
- Loose stools, excessive wind, occasional sickness, and a tendency to react to new foods or rich meals more than seems typical are the most common signs. It is a pattern rather than a formal diagnosis, and one worth discussing with your vet if it happens regularly.
- How do I introduce a new food to a dog with a sensitive stomach?
- Gradually, over a week or more, mixing increasing amounts of the new food with decreasing amounts of the old rather than switching in one go. A sudden change is one of the most common triggers of digestive upset, sensitive stomach or not.
- Is grain-free food better for a sensitive stomach?
- Not automatically — what matters more is a consistent, easily digestible ingredient list with a single named protein source, which grain-free and grain-inclusive foods can both offer or both lack. The label's overall formulation matters more than whether grain is present.
- When should I take my dog to the vet about a sensitive stomach?
- If digestive upset is persistent, getting worse, accompanied by weight loss or blood in the stool, or your dog seems generally unwell, that goes beyond what a food change is likely to resolve and is worth getting checked properly rather than working through diets alone.
Related
Sources
Written against guidance published by UK veterinary and welfare organisations. Always confirm specifics with your own vet.
Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.