The US phamaceutical industry is the laughing stock of the world. It has to be one of the most commercial, poorly regulated and corrupt industry's in your country. When it comes to drugs just go to the US they'll find some for you. If they don't work, they'll find something else to counter the effects, and so on and so on and so on, until you have a cornocopia of colourful medicines to make the world a happy place again.
Then again, you know all about hard core meds, don't you? How many do you take now?
But you have a good question, what HAS Canada contributed in this field? NOTHING I say, NOTHING, compared to the little blue pill of course.
But how about T3C - the most effective drug for dealing with Aids symptoms, that is recent and most widely used drug in the world in the treatment of HIV?
or Insulin? though that doesn't really matter anymore, curing diabetes it's not new and hip like Viagra and has merely been saving millions of lives for decades.
Mustard operation: okay that's getting old now, but saving childrens lives never gets old, does it?
Neonatal screening for congenital hypothyroidism, you might want to look that one up, I had to. It has saved many babies from retardation due to a lack of Thyroid Hormone.
Pablum: Yummy! good for the babies, but again that's old now, everyone knows abotu Pablum.
OH, I know, Polio vaccine, but that is also old and fewer people seem to die from Polio these days so I guess that doesn't count.
Rhogam is a little mroe recent, discovered in the 80's. then again, there are fewer cases of Rhesus disease being passed onto unborn children so I gues sthat one didn't work either.
We made the arm for your space shuttle but that's not medicine that's science. We did perform the first Chiropractic alignment, telegraph, morse code, telephone,and lightbulb (before the patent was bought and marketed by Edison of course), fibre optics, kerosene, the list goes on and on really.
But you're right, Canada does not release billions of dollars worth of questionable and often useless pharmaceuticals the way the US industry does, something I will reconsider getting US citizenship over I'm sure.
In contrast to Canada or other country's, the US invents very little, the US HAS been known to buy patents and market, develop them into major money making enterprises but is not vieiwed by many as an INVENTOR of anything.
Here's a partial list if you are actually interested and not just spewing stuff out of your arse in hope of loooking superior to others as usual.
http://www.angelfire.com/ca/CANpride/inventions.html
Then again, this is an old excercise I have been through many times here, so it's nto really fair on you. I know you don't get taught much about Canadian inventions (or Canada or anywhere else in the world) in school, unless they are later considered American inventions or examples of what America did right of course.