Three drug manufacturers and an ad industry group filed a lawsuit against the Trump administration on Friday. They're trying to stop a new rule that would require them to show list prices of drugs on their TV ads.
Amgen, Merck, and Eli Lilly argue that advertising list prices could mislead consumers about the actual cost of drugs. They also allege the Department of Health and Human Services overstepped its authority when it announced the rule last month.
Under the rule, TV ads would be required to show the prices of any drugs that cost more than $35 for a month's supply.
It's one of the first measures created since the Trump administration announced its blueprint for lowering drug costs last year.
Health Secretary Alex Azar said, "Requiring the inclusion of drugs' list prices in TV ads is the single most significant step any administration has taken toward a simple commitment: American patients deserve to know the prices of the health care they receive."
Additional reporting from Newsy affiliate CNN.