PupkeeperToxicEmergency
Dog ate ADHD medicines? What to do
ADHD stimulant pills can overstimulate a dog's brain and heart, causing agitation, high body temperature, tremors and seizures, even in small amounts.
If your dog ate or touched this, call your vet or a pet poison line now
United States
Poison lines in other countries: United Kingdom, Australia, Canada, New Zealand
What to do now
- Call your vet or a pet poison line now.
- Keep the packaging and bring it with you.
- Tell the vet if the pills were extended-release or a patch.
Don't
- Don't make your dog vomit unless a vet tells you to.
Signs to watch for
- Restlessness or agitation
- Pacing, circling or head bobbing
- Big pupils
- Fast heart rate
- Panting
- High body temperature
- Tremors
- Seizures
When signs appear: Minutes to 12 hours; later with extended-release pills
Why
Amphetamines and methylphenidate are strong stimulants of the brain and heart. Even small amounts can have serious effects in dogs and need emergency care.
Sources
- Merck Veterinary Manual: Toxicoses in Animals From Amphetamines and ADHD Drugs
- Pet Poison Helpline: Methylphenidate
- VCA Animal Hospitals: Behavioral Health Medication Poisoning
Guide reviewed 9 October 2026.
General information from the sources above, not a diagnosis. When in doubt, call your vet.