We recently found out our Newfoundland, Chewbacca, has allergies, poor guy. He was getting infections from having such itchy skin. Anyway, our vet suggested zyrtec, that didn't work. So she suggested we try this new allergy drug just for dogs that cost a lot of money. We wouldn't have been able to afford it without the insurance. He is now healthy and happy with the new meds all thanks to Pet's Best!! Thank you!!