What this calculator does
This tool estimates a reference dose of liquid Pepto-Bismol (bismuth subsalicylate) for a dog based on body weight. A commonly cited veterinary range for the regular-strength liquid is about 0.5 to 1.0 mL per kilogram of body weight, given every 6 to 8 hours for a short period (usually no more than 2–3 doses). It is intended for occasional, mild upset stomach or diarrhea. This is educational information only and is not a substitute for veterinary advice.
How to use it
Enter your dog's weight and choose kilograms or pounds. The calculator converts pounds to kilograms automatically and shows a low-end and high-end dose in milliliters, plus the recommended frequency. Start at the lower end and never exceed the high end without veterinary guidance.
The formula explained
The dose is simply a per-kilogram rate multiplied by weight: $$\text{dose\_mL} = (0.5 \text{ to } 1.0) \times \text{weight\_kg}$$ If you enter pounds, weight is first converted with \(\text{kg} = \text{lb} \times 0.45359237\). The result is a range because the appropriate amount depends on the dog and the situation.
Worked example
For a 10 kg dog: low end = $$0.5 \times 10 = 5 \text{ mL}$$ high end = $$1.0 \times 10 = 10 \text{ mL}$$ So roughly 5–10 mL of liquid Pepto-Bismol every 6–8 hours, with a maximum of a couple of doses.
FAQ
Can I give Pepto-Bismol to cats? No. The salicylate component is dangerous for cats — never use it without a veterinarian's direction.
How long can my dog take it? Only for a short time. If symptoms persist beyond 24–48 hours or worsen, stop and see your vet.
Are there risks? It can darken the stool (which may mask blood), interact with other medications, and is not suitable for dogs with bleeding disorders, salicylate sensitivity, or that are pregnant. Always confirm with your vet first.
