Can I Give My Dog Pepto-Bismol?

Yes, with care
Bismuth subsalicylate is commonly referenced for dogs at published doses. Published guidance for dogs: 1 tsp (5 mL) per 10 lb, every 8h, max 2 days. Contains a salicylate (aspirin relative). Short courses only; black stools expected (can mask GI-bleed signs). Skip if on other NSAIDs or steroids.
Source: Merck Veterinary Manual
Get the exact range for your dog's weight

Skip it or ask a vet first if

cats, neverdogs on NSAIDs/steroidsbleeding disorderspregnant animals

The safe habit

Confirm any medication decision with your veterinarian, who knows your dog's health history and other medications. VetDose shows published reference data, not prescriptions.