Ken Alltucker, Austin Fast and Sydney P. Freedberg April 14, 2026, 5:05 a.m. ET Just a few weeks after President Donald Trump’s December promise that prescription drug prices would plummet "fast and furious," Patricia Brown checked into a California clinic for an infusion of Merck & Co.'s blockbuster cancer drug, Keytruda. When the bill arrived, the clinic's charge for a 400 mg dose dominated the page: $162,567.74. Brown, an accomplished cook battling lung cancer, owed about $2,000.