You’ve seen GEN’s list of the top 20 best-selling drugs of 2012, but what brand new drugs have come out over the past year that are worth watching? Here are top 20 best-selling drugs that were approved and launched during 2012, ranked by their 2012 sales. Data on 2012 comes in most cases from the companies themselves, except where otherwise noted. Drugs are listed by both trade name and generic or active pharmaceutical ingredient name. Accompanying each listing is the marketer(s) of the drug, the drug’s indication, and date of FDA and/or European Commission approval.