PupkeeperCaution
Dog ate antacids and acid reducers? Caution: what to do now
Caution. Extra antacids, or acid reducers like famotidine or omeprazole, usually cause only mild stomach upset in dogs.
Antacids and acid reducers and dogs: key facts
- Verdict
- Caution · Watch at home
- What it can do
- Vomiting, diarrhea, constipation and not eating.
- What to do now
- Take the pack away and count how many tablets are missing. All steps
- Sources
- Merck Veterinary Manual, VCA Animal Hospitals, Pet Poison Helpline. Reviewed 9 October 2026.
What should I do if my dog ate antacids and acid reducers?
- Take the pack away and count how many tablets are missing.
- Watch your dog for vomiting, diarrhea or constipation.
- Call your vet now if your dog ate a large amount. Vets can help most within the first 2 to 3 hours.
- Call your vet if your dog seems unwell after eating them.
Don't
- Don't make your dog vomit unless a vet tells you to.
Symptoms to watch for
- Vomiting
- Diarrhea
- Constipation
- Not eating
Why
Antacids are poorly absorbed, so serious whole-body effects are unlikely. Famotidine-type acid reducers have a wide margin of safety, and omeprazole overdoses are not usually serious.
Sources
- Merck Veterinary Manual: Poisoning from Human Over-the-Counter Drugs
- VCA Animal Hospitals: Omeprazole
- Pet Poison Helpline: Top 5 Selling Human Medications and What Happens When Pets Eat Them
Guide reviewed 9 October 2026. Page updated 7 November 2026.
General information from the sources above, not a diagnosis. When in doubt, call your vet.