How often can I safely give my dog Zyrtec for allergy relief?

Dogs around 10 pounds in weight should only get a half tab once per day. If the Zyrtec doesn't seem to be working, or seems to wear off too quickly, I would contact Hope's vet. It may be time to switch to a stronger medication, or try a different OTC such as Claritin to see if it is better for longer-term control of Hope's allergies.

Your vet is correct in this dosage. Zyrtec dosage for a pet this size is a little over 30 mgs daily. : ) Pet dosage and human dosages are different based on our metabolism differences. Also your pets weight converted into kg's is 32.7 kg's. Thanks for visiting Petco Pet Education Center, formerly Petcoach. Take care : )

Hello, The answer to this is: maybe! Cetirizine anecdotally in very large dogs is sometimes still effective at a 20mg per day dosage, but some dogs will need up to a 1 mg/kg dose for relief. At Goose's weight, this would be three 20mg tablets. I'd suggest trying one 20mg tab per day at first, and going to three tabs per day if needed. I hope this helps. Thanks for using Petco Pet Education Center, formerly Petcoach.

Both are antihistamines and giving them together may cause stronger side effects. It is NOT recommended. Give one or the other based on your dog's weight and only under the advice of your veterinarian.

Thanks for using Petco Pet Education Center, formerly Petcoach! Yes this medication can be given to dogs. However, I would recommend you check in with your veterinarian first as they know his medical history. Keep in mind some of these drugs can interact with other drugs or diseases and be harmful to a patient which is why I recommend you check in with your veterinarian first. Best of luck!

Legally, we are prohibited from providing dosing information, even for OTC medications, in the absence of a physical exam and a patient-veterinarian-client relationship. Contact your veterinarian who can give you a dose based on Chloe's current weight.

The published dose for Zyrtec in dogs is 1 mg/kg which would be 7.7 mg for Mollie. Since the tablet only comes in 10 mg, your vet probably wanted to round so that Mollie wasn't underdosed. I wouldn't recommend changing the dose without talking to your vet first.