Children with autism are showing ‘dramatic improvement’ with this cheap drug — and doctor behind its research says it may one day prevent the disorder
As autism diagnoses continue to rise in the U.S., scientists are exploring innovative treatments — and one unexpected option may be a generic cancer drug. Leucovorin, typically used to reduce the side effects of chemotherapy, is showing remarkable promise in improving symptoms of autism.
Over the past 13 years, Dr. Richard Frye, a pediatric neurologist, has gathered compelling evidence that leucovorin may help children with autism — including nonverbal kids who began speaking after treatment. While there’s no single “autism pill,” Frye believes leucovorin offers real hope for some families.
The drug’s potential lies in its ability to bypass a condition called cerebral folate deficiency (CFD), which is linked to low levels of folate in the brain. Many children with autism have been found to carry folate receptor autoantibodies that block the brain’s folate transport. Leucovorin, a folic acid derivative, can restore folate levels despite this blockage.
Frye’s early patients often showed dramatic improvements — from reduced seizures to increased communication and social interaction.
With autism now affecting about 1 in 36 children in the U.S., the need for effective treatments has never been greater. While further research is needed, leucovorin is offering a surprising and hopeful path forward.
Published March 19, 2025, 6:00 a.m. ET
New York Post










