Chronic Diseases & Special Conditions
IBD in Dogs: Dietary Management of Chronic Inflammatory Bowel Disease
Recurring diarrhea, vomiting, and weight loss can indicate IBD. We'll show you the hydrolyzed and novel protein diet protocols.
When to see a vet IMMEDIATELY
- •Blood in stool or vomit
- •Lethargy, not drinking, or not eating for 24+ hours
- •Repeated vomiting, especially if water won't stay down
- •Swollen or painful abdomen, whimpering
- •Diarrhea lasting more than 3 days, or worsening symptoms
This article is informational and does not replace veterinary examination.
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IBD in Dogs: Dietary Management of Chronic Inflammatory Bowel Disease
In IBD (inflammatory bowel disease), the mucous membrane of the intestinal wall is persistently inflamed. Unlike a single bout of diarrhea, this is a recurring complaint lasting weeks or months, and diet is not a supplement but the cornerstone of treatment.
When to suspect IBD?
- Recurring diarrhea or vomiting lasting longer than 3 weeks
- Weight loss despite good appetite
- Mucus, sometimes bloody stool
- Gurgling stomach, gas, post-meal discomfort
- Symptoms come and go, and a "bland diet" only helps temporarily
The diagnosis is exclusionary: it can only be confirmed by intestinal biopsy after ruling out parasites, EPI, pancreatitis, food allergies, and tumors. This is a veterinary task.
Two paths for dietary management
1. Hydrolyzed protein diet
Proteins are broken down into such small pieces that the immune system does not recognize them. This is the most studied IBD diet, and many dogs achieve remission solely on it.
2. Novel protein diet
A single protein source never consumed before: duck, venison, rabbit, fish. It is more readily available but only works if the protein is truly new: review the ingredients of previous foods.
The protocol in both cases:
- Minimum 6–8 weeks, strictly a single diet
- Nothing else: no treats, no flavored tablets, no dental chews, no scraps from the table
- 3–4 smaller meals per day instead of 2
- Keep a log: stool consistency, vomiting, weight weekly
If there is no improvement within 6–8 weeks, dietary change is not enough, and anti-inflammatory treatment follows.
Low fat, high digestibility
- Fat: 8–12% on a dry matter basis. Fat is poorly absorbed in an inflamed intestine and worsens diarrhea.
- Easily digestible carbohydrates: rice, potato, pumpkin
- Soluble fiber in small amounts (psyllium, pumpkin) helps form stool
Supplements that help
| Supplement | Role |
|---|---|
| Probiotic / synbiotic | Restoring gut flora |
| Omega-3 (EPA+DHA) | Reducing mucosal inflammation |
| Vitamin B12 | Deficiency is common in IBD, supplemented by injection |
| Glutamine | Energy source for intestinal epithelial cells |
What never to do
- Do not switch foods every 2-3 weeks on a "maybe this is better" basis: every change restarts the process
- Do not feed a raw diet to an inflamed intestine without a diagnosis
- Do not stop the diet after the first good week; remission requires a stable diet for months
When it's urgent
Bloody, black stool, persistent vomiting, lethargy, sudden severe weight loss: see a veterinarian immediately.
This information is for informational purposes only and does not replace a veterinary examination.
Free tool — no sign-up
Enter weight, age and body shape: 30 seconds and you get the daily portion.
This is general information and does not replace a veterinary diagnosis.
This guide was compiled based on the expert input of Reka Fazekas-Birizdo canine nutritionist.
Certified Canine Nutritionist
