What makes a drug a success? Is it a great ad campaign, or promotions from doctors? Does the drug address a much-needed area of medicine, or treat a disease in an exceptional way with few side effects? Regardless of what makes a drug take off, the way to measure its overall success is hard to repute: sales.
GEN updates their list of the best-selling drugs of the 21st century with the top 20 best-selling prescription drugs worldwide of 2012, based on sales figures released by biopharma companies in press announcements, annual reports, and conference calls during 2012 and 2011. Drugs are ranked by 2012 sales. CER denotes “constant exchange rate.”