Zyrtec can worsen the issues because it can cause urine retention in your dog. Exercise precaution if your dog has a history ...

oral Cetirizine , , and are used in adults and children at least 6 years of age. oral tabletcapsuleoral ... effects to FDA at 1-800-FDA-1088. Use Zyrtec Liquid Gels (Oral) exactly as directed ...

The two medications also differ in the minimum age at which they can be used, purchasing restrictions, and available dosage forms. Zyrtec can treat skin reactions (hives) associated with allergies ...