Pepto-Bismol (bismuth subsalicylate) is occasionally used in dogs for upset stomachs, but it contains a salicylate compound related to aspirin, carries several important contraindications, and many liquid versions contain xylitol — lethal to dogs. Never give to cats.
⚠️ Always consult your vet
Never give human medications to pets without veterinary guidance. Dosing errors can be dangerous.
Dose Guide by Weight
General reference ranges only. Always confirm with your vet before giving.
| Dog Size | Dose | Frequency |
|---|---|---|
| Any chewable/liquid | Check ingredients first | Never if xylitol present |
| Under 25 lbs | ½ regular-strength tablet | Every 6–8 hours, max 3×/day |
| 25–50 lbs | 1 regular-strength tablet | Every 6–8 hours, max 3×/day |
| 50+ lbs | 1–2 tablets | Every 6–8 hours, max 3×/day |
ℹ️ Standard guideline: 1 tablet per 10 lbs body weight. Maximum 2 tablets per dose. Give with food. Never give for more than 48 hours without vet guidance.
Never Use These
- Liquid Pepto containing xylitol — always check label for 'xylitol', 'birch sugar', or 'sugar alcohol'
- Pepto-Bismol for cats — bismouth subsalicylate is toxic to cats
- Any form if dog is already on NSAIDs (Carprofen, Meloxicam, Aspirin) — doubled GI bleeding risk
- Dogs with bloody stools or suspected GI bleeding — masks symptoms
- Pregnant or nursing dogs — salicylates cross the placenta
Potential Uses
- Short-term GI upset and mild diarrhea (1–2 episodes)
- Occasional loose stools on a bland diet
- Not recommended as a first-line treatment — plain boiled chicken and rice often works just as well
Side Effects to Monitor
Frequently Asked Questions
In short-term, appropriate doses it can help mild GI upset. However it contains a salicylate compound (related to aspirin) and shouldn't be used alongside NSAIDs or for more than 48 hours.
Check the ingredient list for 'xylitol', 'birch sugar', 'sugar alcohol', or 'polyol'. Liquid and chewable versions are higher risk than regular tablets.
Plain boiled chicken with white rice, plain canned pumpkin (not pie filling), or a probiotic designed for dogs. These are gentler and have no drug interaction risks.
No — limit to 2 days maximum. If symptoms persist beyond 48 hours, see your vet. Ongoing GI issues need diagnosis, not medication.
Black stools are a harmless and expected side effect of bismuth — it turns stool dark. However, if the stools are tarry, sticky, and smell especially foul, that's a sign of GI bleeding; call your vet.