What to Feed a Dog After Stomach Upset or Gut Illness
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Part of our Complete Guide to Dog Digestive Health — everything you need to know about digestive problems in dogs and how to solve them through diet.
A bout of vomiting, diarrhoea or gastrointestinal illness is stressful for both dogs and owners. Knowing what to feed during and after recovery can significantly speed up the healing process and reduce the risk of symptoms returning.
Should You Withhold Food After a Stomach Upset?
Short-term fasting (12–24 hours) used to be the standard advice after vomiting or diarrhoea. Current veterinary guidance has shifted — for adult dogs with mild upset and no other symptoms, a short rest period followed by a bland, highly digestible food is now generally preferred over extended fasting. Always ensure water is available throughout.
Do not fast puppies, small breeds, seniors or dogs with underlying health conditions without specific veterinary guidance.
When to See a Vet First
- Vomiting or diarrhoea for more than 24–48 hours
- Blood in vomit or stool
- Lethargy, weakness or unresponsiveness
- Distended or painful abdomen
- Ingestion of something potentially toxic
- Puppy, senior or dog with existing health conditions
The Best Foods for Gut Recovery in Dogs
Highly Digestible Protein
The gut lining renews itself every 3–5 days. After illness, it needs amino acid building blocks to repair. Our Hydrolysed Digestive Care Dog Food delivers 95% protein digestibility and includes collagen peptides (1.9%) to support intestinal barrier function — the structures damaged during GI illness.
Digestive Fibre
Lignocellulose helps normalise stool consistency during recovery, supporting firmer stools without irritating the gut further.
Postbiotic Support
GI illness often disrupts the gut microbiome. TruPet™ postbiotic has been shown in dogs to increase beneficial Bifidobacterium and support immune cell function — exactly what a recovering gut needs.
How to Reintroduce Food After a Stomach Upset
- Start small — offer a quarter of your dog's normal portion, increasing gradually over 24–48 hours
- Feed little and often — three to four small meals is easier on a recovering gut
- Avoid rich, fatty or highly processed food during recovery
- Transition any new food slowly — even a recovery food should be introduced over 5–10 days
Should You Switch Foods Permanently After a Stomach Upset?
If the upset was a one-off with an obvious cause, returning to normal food once recovered is usually fine. If upsets are recurrent or the gut seems chronically sensitive, a switch to a hydrolysed digestive care dog food or our range for sensitive stomachs may prevent recurrence.
Frequently Asked Questions
What is the best dog food to feed after diarrhoea?
A highly digestible, low-fat food with a single protein source. Our Hydrolysed Digestive Care Dog Food — 95% protein digestibility, collagen for gut wall repair and TruPet™ postbiotic to restore the microbiome.
Should I starve my dog after vomiting?
A short rest of 12–24 hours may help settle the gut for adult dogs with mild symptoms. Extended fasting is not recommended, and puppies, seniors and small breeds should not be fasted without veterinary advice.
How long does it take for a dog's stomach to recover from an upset?
Mild upsets typically resolve within 24–48 hours. More significant GI illness can take 1–2 weeks for full recovery. A highly digestible food that supports gut lining repair can shorten this.
Can I give my dog plain boiled chicken after a stomach upset?
Plain boiled chicken and rice is a useful short-term solution. It is not nutritionally complete for long-term feeding. Transitioning to our Digestive Care Dog Food within a few days provides ongoing gut support alongside complete nutrition.
What foods should I avoid feeding a dog with an upset stomach?
Avoid high-fat foods, rich treats, dairy, raw meat, and anything with artificial additives during recovery.
Seen It Work
Read how Edith — a dog with chronic digestive flare-ups — recovered after switching to our Hydrolysed Digestive Care Dog Food: Edith's story →
Looking for the full picture? Our Complete Guide to Dog Digestive Health covers causes, signs, dietary solutions and when to see a vet — all in one place.