You probably need a prior authorization from the insurance company because they don't usually cover the medication since it's not in their formulary; due to the fact that there are over the counter allergy medications comparable to the zyrtec. The pharmacy usually calls the dr. and the dr. has to call the insurance company to give the insurance company a reason why you have to take it. And that doesn't mean that it will be covered. The process normally takes a few hours or days. I say try out the claritin over the counter or the generic first to see if it works.

The other option is to call the insurance co. and see what is covered under the insurance and tell the dr. to call that particular medication in.