Vertex Pharmaceuticals ( VRTX 2.53%) has long been known as the company to turn to for life-saving cystic fibrosis (CF) drugs, and this platform has helped it generate billions of dollars in earnings. But Vertex now is showing that it also can be a game changer when it comes to treating one of the most common of health problems -- pain.

On Jan. 30, the U.S. Food and Drug Administration (FDA) approved a new drug called suzetrigine to treat moderate-to-severe pain. The prescription pills, sold under the brand name Journavx and made by Vertex Pharmaceuticals,