Can Dogs Have Vinegar? Apple Cider Vinegar & Safety

Can Dogs Have Vinegar?

LIMIT

LIMIT — Vinegar is acidic and can irritate the mouth and stomach. A little diluted apple cider vinegar is sometimes used, but benefits are unproven, so ask your vet first.

Vinegar is not highly toxic, but it is acidic and can cause stomach irritation, vomiting or diarrhoea. Undiluted vinegar should not be given, and health claims for apple cider vinegar in dogs are not well supported.

Two bottles of apple cider vinegar with fresh apples on a wooden board

Quick answer

Category: Other
Recommended preparation: Never undiluted; only as advised by your vet
Main concern: Acidity irritating the mouth, throat and stomach; unproven health claims; drinks and salad dressings
Suitable as everyday food: No — ask your vet

The full answer

Vinegar is a sour liquid made by fermenting alcohol. Small amounts, such as the traces on salad or in a pickle brine that has been licked, are unlikely to cause lasting harm, but vinegar is acidic and can irritate the mouth, throat and stomach.

Apple cider vinegar is popular online as a supplement and flea or ear cleaner, but evidence for these uses in dogs is limited. Undiluted vinegar can burn tissues, particularly around the eyes and on broken skin. Dogs with sensitive stomachs, kidney disease or other health conditions should avoid it unless the vet agrees.

Salad dressings and balsamic glazes may contain sugar, onion or garlic. If you are tempted to use vinegar for health reasons, talk to your vet about safer, proven options.

Is Vinegar Good for Dogs?

Vinegar offers no nutrition, and claimed benefits for dogs are not well supported.

Potential benefits

None proven

Risks and Things to Know

Acidity can irritate the mouth, throat and stomach
Undiluted vinegar can burn tissues
Can cause vomiting or diarrhoea
Salad dressings and glazes may contain garlic, onion or sugar
May worsen some health conditions

How much is okay?

We do not recommend adding vinegar to your dog's diet. Ask your vet first.

How Should I Prepare It?

Never give undiluted vinegar.
Only use as directed by your vet.

Can Puppies Eat Vinegar?

Skip vinegar for puppies.

What If My Dog Ate Too Much?

Drinking vinegar can cause drooling, vomiting, diarrhoea and mouth irritation.

If your dog drank a significant amount of undiluted vinegar or has trouble breathing, contact a vet immediately.

This guide is for general educational purposes and isn't a substitute for advice from your veterinarian. If your dog has eaten something potentially toxic or is showing concerning symptoms, contact a veterinarian promptly.

Frequently Asked Questions

Benefits are unproven and it can irritate the stomach. Ask your vet before using it.

It is not highly toxic, but it is acidic and can irritate the mouth and stomach.

Ask your vet first. Vinegar can irritate sore or broken skin.

A small amount may cause mild upset. Contact your vet if your dog drank a lot or is unwell.

How this guide was written

Last updated 13 October 2026. We write from widely published, mainstream pet-health sources and avoid presenting feeding amounts as veterinary prescriptions.