That'll almost certainly be Tylenol.
> No other pharmaceutical product has been deemed so risky that it couldn't exist unless people were prevented from suing its manufacturers.
That's not why the program exists. It was deemed risky for the national security of the United States to lose its ability to manufacture vaccines because twelve lay people in a jury room decide to bankrupt a drug company.
https://en.wikipedia.org/wiki/National_Vaccine_Injury_Compen...
"The National Vaccine Injury Compensation Program (VICP or NVICP) was established by the 1986 National Childhood Vaccine Injury Act (NCVIA), passed by the United States Congress in response to a threat to the vaccine supply due to a 1980s scare over the DPT vaccine. Despite the belief of most public health officials that claims of side effects were unfounded, large jury awards had been given to some plaintiffs, most DPT vaccine makers had ceased production, and officials feared the loss of herd immunity."