<human>: Give me a shortened version of the text

My dog has very, very frustrating allergies that we are continuously battling. We gone to the vet many times - I'm just looking into other things to try to help combat the issues. 

She has definite food allergies, but after the process of elimination, we think this new allergy outbreak is environmental. (We recently moved to a new state). 

We've tried Benadryl with her many times, and unfortunately it does not help her at all. I've heard some other people say the same thing, so I'm thinking about trying a different allergy med, such as Zyrtec or Claritin. I'm posting here in hopes of learning a bit more about these meds, because I've personally never tried them, and I always get a bit paranoid about using new meds with my girl. 

A bit more info: My dog is 145 pounds, and her biggest allergy issue at the moment is constant hives, and a deteriorating coat condition. :/ (We're using special shampoos, supplements, etc to help her skin, so the hives are our biggest concern, at the moment) Thankfully she doesn't normally seem itchy.
<bot>: Do you use Zyrtec or Claritin for your dog with allergies? Does it seem to work? Has anyone ever noticed a side effect? Any dosing advice would be helpful, as well!