I did this for Zyrtec, because my insurance made me pay $35. month and there was no generic. My ins. won't pay for more than one month at a time, either. Exactly two months after I ordered the generic, you could buy both the generic and the real stuff over the counter. Go figure! I did save about $30. for a three month supply when I bought the generic, but the real stuff price was still fairly high. I think I used canadadrugs.com They have the price for just about all their drugs on their site. I did not need a script for the zyrtec, because it was already sold over the counter there. I ended up calling them and they were very helpful.