Is Amlodipine (Norvasc) Safe for Dogs?
Why it’s a problem
Amlodipine is a calcium-channel blocker that widens blood vessels, and larger ingestions have been reported to cause severe hypotension with weakness and collapse. A single tablet in a large dog often causes only mild lethargy, but small dogs and larger amounts tip into real danger. Effects can last many hours.
How to keep your pet safe
Store amlodipine out of reach and keep the bottle sealed — dogs chew through blister packs and caps. Heart medications should only ever be used under a veterinary prescription.
Warning signs to watch for
Lethargy, weakness, wobbliness, vomiting, drooling; larger ingestions: collapse, pale gums, slow or fast heart rate, fainting.
When to call the vet
Call your veterinarian or a pet poison hotline after any exposure — small dogs and larger amounts need prompt assessment. Dogs with significant ingestions may need monitoring of blood pressure and heart function.
Common questions
My dog ate my Norvasc — is one tablet dangerous?
In a large dog, often mild, but in a small dog one tablet can lower blood pressure significantly. Call your vet or a poison hotline with the strength and your dog’s weight.
What does amlodipine overdose look like in dogs?
Severe weakness, wobbliness, pale gums, and possible collapse from low blood pressure. Any of these after an exposure warrant an immediate veterinary call.
More medications hazards for dogs
This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate or touched something concerning, contact your veterinarian or a pet poison hotline right away. In the US: Pet Poison Helpline (855) 764-7661, ASPCA Animal Poison Control (888) 426-4435 (fees may apply).