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My dog took mirtazapine early. Is an extra dose okay for him?

Updated on September 23rd, 2025

Pet's info: Dog | Schnoodle | Male | neutered | 17 years old | 20.4 lbs

I gave my dog two 7.5 mg doses of mirtazapine in 12 hours instead of 24 hours. Will he be ok?

1 Answer

Most Helpful Answer

Angel Alvarado, LVT

Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on April 10th, 2019

Mirtazipine is typically well tolerated in dogs. You may see sedation or drowsiness. Symptoms that should be addressed by your vet include low blood pressure or increased heart rate. Given his age, you may want to have him checked out at the nearest veterinary ER or put a call in to the Pet Poison Helpline ( (855) 764-7661 ). There is a fee for this call, but they will have toxicologists and doctors who can tell you definitively if Cody is at any risk.
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