The prescription pills, sold under the brand name Journavx and made by Vertex Pharmaceuticals, are taken twice a day and represent the first new class of pain medications in 20 years—and the first non-opioid painkiller since that class first appeared on the market in the 1980s.

The drug, Journavx by Vertex Pharmaceuticals, blocks pain signals to the brain, making it nonaddictive. The Food and Drug Administration approved a new medication Thursday to treat pain from an injury or surgery. It is expensive, with a list price of $15.50 per pill. But unlike opioid pain medicines, it cannot become addictive.