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PetDosageChart

Antidiarrheal / Gastroprotectant · For Dogs · 100 lb

How much Pepto Bismol for a 100 lb dog?

A 100 lb dog (45.4 kg) should receive approximately 22.7 mg of Pepto Bismol per dose, given every 6-8 hours.

This dosage information is for educational purposes only. Always consult your veterinarian before giving any medication to your pet. Dosages may vary based on your pet's health conditions, other medications, and individual factors.

Content reviewed by licensed veterinarians. Sourced from Plumb's Veterinary Drug Handbook and the Merck Veterinary Manual.

Dosage · 100 lb dog

Pepto Bismol dose for a 100 lb dog

Low Dose

11.3

mg

Standard

22.7

mg

Max Safe

45.4

mg

Frequency

every 6-8 hours

Weight in kg

45.4 kg

Always confirm with your veterinarian before administering medication. These calculations are estimates based on published veterinary pharmacology references.

Other Weights

Pepto Bismol for a different size dog

FAQ · 100 lb dog

Questions about Pepto Bismol for a 100 lb dog

How much Pepto Bismol for a 100 lb dog?
A 100 lb dog should receive approximately 22.7 mg of Pepto Bismol (Bismuth Subsalicylate) per dose, given every 6-8 hours. Always confirm with your veterinarian before administering medication.
What is the safe dose range of Pepto Bismol for a 100 lb dog?
The published dose range for a 100 lb dog is roughly 11.3 mg (low) to 45.4 mg (max safe), with 22.7 mg as the typical standard dose. Frequency: every 6-8 hours.
How often can I give Pepto Bismol to a 100 lb dog?
Pepto Bismol is typically given every 6-8 hours. Do not exceed the recommended frequency without veterinary guidance.

Need a different weight?

Use the calculator on the main Pepto Bismol page for any exact weight, or read the full dosage chart and safety information.

Full Pepto Bismol dosage guide →

Sources · 09

Sources & references

The dosage information on this page is compiled from the following veterinary and pharmaceutical references:

  • Plumb's Veterinary Drug Handbook — the standard veterinary pharmacology reference used by veterinarians worldwide.
  • Merck Veterinary Manual — a trusted, peer-reviewed resource for veterinary professionals and pet owners.
  • DailyMed (FDA Drug Labels) — official FDA-approved drug labeling and prescribing information for Bismuth Subsalicylate.

Read more about our methodology and how we calculate dosages.