Can a US citizen get medication while visiting in Canada?

Hypothetically: I am a US citizen with a health condition. I want to visit family in Canada for six months (180 days), but I can only bring two months worth of my medication. Can I, after two months, get my medication from a Canadian clinic while I am there? Is there a way to do this at all? I know I won't have their insurance, but can I just pay for the medication and get it there? If so, what will it cost me? Any suggestions on how to get the rest of my medication if not?