Is Cats Safe?
Is Zyrtec (cetirizine) Safe for Cats?
Caution — Zyrtec (cetirizine) can be risky for cats.
Zyrtec (cetirizine) isn't classed as outright toxic, but it warrants caution around cats — Plain cetirizine is generally well tolerated off-label, BUT Zyrtec-D contains pseudoephedrine (toxic) and some liquids contain propylene glycol.. When in doubt, keep it out of reach and ask your veterinarian.
| Category | Medicine |
|---|---|
| Toxic principle | Plain cetirizine is generally well tolerated off-label, BUT Zyrtec-D contains pseudoephedrine (toxic) and some liquids contain propylene glycol. |
| Also known as | zyrtec, cetirizine, antihistamine |
Signs to watch for in cats
- Plain: occasional drowsiness
- Drooling
- Mild GI upset. The 'D' form: fast heart rate
- Agitation
- Tremors
- Seizures. Use only under vet direction
- Never the 'D' or syrup form
If your cat may have been exposed to Zyrtec (cetirizine):
- Don't wait for symptoms; don't induce vomiting unless a professional tells you to.
- Note what and how much, and take any packaging with you.
- Call your vet or a 24/7 line now — Pet Poison Helpline 855-764-7661 · ASPCA 888-426-4435.
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Frequently asked questions
Is Zyrtec (cetirizine) safe for cats?
Zyrtec (cetirizine) is best treated with caution — it isn't classed as toxic but can cause problems for cats in some forms or amounts.
What are the symptoms if a cat is exposed to Zyrtec (cetirizine)?
Reported signs include: Plain: occasional drowsiness, Drooling, Mild GI upset. The 'D' form: fast heart rate, Agitation, Tremors, Seizures. Use only under vet direction, Never the 'D' or syrup form.
What makes Zyrtec (cetirizine) toxic to cats?
The harmful component reported for Zyrtec (cetirizine) is Plain cetirizine is generally well tolerated off-label, BUT Zyrtec-D contains pseudoephedrine (toxic) and some liquids contain propylene glycol.. Cats metabolise many such compounds poorly, so even small exposures can cause problems.
How much Zyrtec (cetirizine) is dangerous to cats?
There is no established "safe" amount — sensitivity varies by cat, and small exposures can still cause signs. Treat any exposure as potentially serious rather than waiting to see how much was involved.
What should I do if my cat ate Zyrtec (cetirizine)?
Contact your vet or a 24/7 animal poison line right away: Pet Poison Helpline (855-764-7661) or ASPCA Animal Poison Control (888-426-4435).