Perris, as with other countries, some of Canada's medicines meet our standards, some don't. Another problem is "fake" drugs. Viagra is a prime example of this. Lots of the websites advertising Viagra for so much cheaper, from Canada, were breaking down the real ones, adding corn starch, and other fillers, coloring, and re-pressing it into appropriately shaped tablets. Not only don't you know how much is really in your system, in case of adverse reaction, BUT the ingredients used as fillers carry the potential of being something the recipient might be allergic to.