Be careful. I believe there was a thread on here at some point that linked to some information that some "Canadian" online pharmacies are actually run from other places. After all, your drugs come in the mail, who knows where they really come from? I personally just wouldn't order meds through the mail but that's just me.
I know there used to be busloads of folks who came up and got their prescriptions filled in person. Not sure if that's still doable or not.