PupkeeperCan dogs eat marshmallows and gummy candy? Caution
Caution. Plain marshmallows and gummy candy aren't toxic but are mostly sugar and can upset the stomach. Sugar-free ones may contain xylitol, which is toxic.
Marshmallows and gummy candy and dogs: key facts
- Verdict
- Caution · Watch at home
- What it can do
- Vomiting or diarrhea, weakness, stumbling or collapse (xylitol), tremors or seizures (xylitol), belly pain, low energy or not eating and coughing, gagging or trouble breathing.
- How fast
- Xylitol can act within 10-15 minutes, rarely hours later; pancreatitis signs can take 2-4 days
- How to serve
- Not recommended in any amount. Give treats made for dogs instead.
- What to do now
- Check the label for xylitol, birch sugar or wood sugar, and for grape juice. Keep the bag. All steps
- Sources
- Pet Poison Helpline, AKC. Reviewed 9 October 2026.
What should I do if my dog ate marshmallows and gummy candy?
- Check the label for xylitol, birch sugar or wood sugar, and for grape juice. Keep the bag.
- If it lists any of these, says sugar-free, or you can't tell, call your vet or a pet poison line now.
- Also call now if it was a chocolate treat like s'mores or rocky road, or could be a cannabis gummy.
- If it was plain, watch for vomiting or diarrhea, and for belly pain or low energy over the next few days.
- Call your vet right away if your dog is coughing, gagging or having trouble breathing.
Don't
- Don't make your dog vomit unless a vet tells you to.
- Don't use marshmallows to hide pills.
How to give it safely
Not recommended in any amount. Give treats made for dogs instead.
Symptoms to watch for
- Vomiting or diarrhea
- Weakness, stumbling or collapse (xylitol)
- Tremors or seizures (xylitol)
- Belly pain, low energy or not eating
- Coughing, gagging or trouble breathing
When signs appear: Xylitol can act within 10-15 minutes, rarely hours later; pancreatitis signs can take 2-4 days
Why
Regular marshmallows and gummies are mostly sugar, which can cause vomiting or diarrhea, and large amounts of sugary, high-fat treats can lead to pancreatitis. Some sugar-free, keto or low-sugar versions contain xylitol, and fruit gummies may contain grape juice, which is dangerous for dogs.
Sources
- Pet Poison Helpline: Can Dogs Eat Marshmallows?
- Pet Poison Helpline: Can Dogs Eat Candy?
- AKC: Which Human Foods Can Dogs Eat and Which Are Dangerous?
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.