From Lawrence Kudlow and his Kudlow's money Politics on drug reimportation:

No Reimportation
Drug reimportation is a terrible idea. 30 million Canadians cannot supply enough drugs for 300 million Americans. Leaving alone the safety issue (re-imported drugs are not produced under the auspices of the FDA), doing it wouldn’t even save American consumers that much, after all the necessary bureaucracy is put in place. Two excellent articles on this theme, one from Rick Weiss in the Washington Post, and one from Laura Gilcrest at CBS Marktewatch, go into more depth. The more details emerge, the more it looks like generic drugs, US-made, are the way to go.