On May 6, the U.S. Food and Drug Administration (FDA) announced the approval of Ruzurgi (amifampridine) for the treatment of children with Lambert-Eaton myasthenic syndrome (LEMS) who are between 6 and 17 years of age. This is the second FDA-approved treatment for LEMS and the first approved treatment for pediatric LEMS patients. Ruzurgi is an oral potassium . . .