I'm surprised it's legal in Canada. As was stated, Naproxen is a prescription medication. Hmmmm, I deal with Pharmacists all day. Time for a new conversation.
I told my Dr. I had used Naproxen to help me get through a Disney day, and he said "you must have bought it down there. I'ts not available here without a presciption" So, I showed him what I bought. He said it was a lower dose than what we would get here, and then wrote me out a presription for it.