How long does it take for Zyrtec to work in dogs?
The Checkup by Singlecare
AUGUST 8, 2024
Apted says that Zyrtec’s efficiency can vary depending on the dog, the dosage, underlying conditions, gastrointestinal issues, the dog’s metabolism, and other medications the dog is taking. A chemical created by the immune system, histamines react when they encounter an allergen like pollen, dust, or mold.
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