Is Glaucoma Eye Drops (Latanoprost) Safe for Cats?
Why it’s a problem
A single drop of latanoprost contains a tiny drug amount, but cats groom spilled liquid off their fur, turning a small spill into a full oral exposure. Reported effects center on vomiting and lethargy, with more significant illness possible if a cat chews the bottle. Cats’ sensitivity to many drugs makes professional advice worthwhile even for small exposures.
How to keep your pet safe
Cap the bottle immediately after each use and store it in a closed drawer or the refrigerator door. Wipe up drips promptly, including on your hands and face if a cat grooms you. Keep all eye drop bottles out of feline reach.
Warning signs to watch for
Drooling, vomiting, hiding, lethargy, reduced appetite; occasionally diarrhea.
When to call the vet
Call your veterinarian or a pet poison hotline after any confirmed or suspected lick, noting when it happened. Most cases need only observation, but let a professional decide based on the amount. Never share your eye drops with a cat, even for similar-looking eye problems.
Common questions
Is latanoprost dangerous if my cat licks it?
A small lick may cause drooling or vomiting, and cats also groom spills off their fur, which adds to the dose. Call your vet or a pet poison hotline and describe the exposure.
My cat has red eyes — can I use my glaucoma drops?
No. Never use human eye medication on a cat. Some human eye drugs are harmful to cats, and red eyes can signal conditions needing different treatment entirely.
More medications hazards for cats
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).