Most other countries regulate drug prices; the U.S. doesn't. The U.S. spends the most money per capita on pharmaceuticals. According to a 2019 congressional study, in most other developed countries drug prices average around 24% to 30% of the U.S. level. U.S. sales ($376 billion in 2017) account for 33% of global pharmaceutical revenues.
The study reported that American prescription prices on average are four times those in Switzerland, which has greater per-capital wealth than the U.S. GlaxoSmithKline plc sells Advair Diskus, a pulmonary-disease drug, for about 13 times more in the U.S. than the average international price. Merck & Co. sells Dulera, which treats asthma, for an average of 50 times more in America than elsewhere.