Summary
Mason Connor, diagnosed with autism at 2.5 years old, was nonverbal until his parents discovered leucovorin, a folic acid-based drug used to counter chemotherapy side effects.
Within days of taking it, Mason spoke his first words. Dr. Richard Frye, a pediatric neurologist, believes leucovorin can help many autistic children but lacks FDA approval due to low profitability.
Nonprofit Every Cure advocates for repurposing existing drugs for new treatments.
Mason, now 5, is set to start mainstream kindergarten.
There seem to have been several small scale studies on it. It seems to work for a specific subset of the patients, and there are tests for it, but it seems to be pretty invasive.