Richard Frye

Rule Changes

Leading researcher on leucovorin and autism; continues to advocate for further study

In September 2025, White House officials told parents of autistic children that a cheap, generic drug called leucovorin might improve their children's speech and behavior. Prescriptions surged 71% in the following months, pharmacies ran dry, and the Food and Drug Administration (FDA) allowed emergency imports from Canada and Spain. On March 10, 2026, the FDA approved leucovorin — but only for a genetic condition so rare that fewer than 50 cases have ever been identified worldwide, not for autism.

Updated May 30