The US Food and Drug Administration signed off Thursday on the first new type of pain reliever to be approved in more than two decades. The drug, suzetrigine, is a 50-milligram prescription pill that’s taken every 12 hours after a larger starter dose.

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.