Can I Give My Dog Cetirizine?

Yes, with care
Cetirizine is commonly referenced for dogs at published doses. The published veterinary reference range for cetirizine in dogs is 0.5-1 mg per kg of body weight, given every 24h. In practice: 10 mg per dog daily (5 mg under 10 lbs). Plain cetirizine ONLY. Zyrtec-D is toxic.
Source: Veterinary Partner (VIN)
Get the exact range for your dog's weight

Skip it or ask a vet first if

Zyrtec-D / decongestant versionskidney disease

The safe habit

Confirm any medication decision with your veterinarian, who knows your dog's health history and other medications. VetDose shows published reference data, not prescriptions.