The United States Food and Drug Administration has approved leucovorin as a broad treatment for autism.

Verified by Lenz · Mar 20, 2026

The Short Version

This claim is false. The FDA approved leucovorin in March 2026 only for cerebral folate deficiency (CFD), an ultra-rare genetic condition affecting roughly 1 in a million people — not for autism. Leucovorin remains investigational for autism, the American Academy of Pediatrics does not recommend its routine use for autistic children, and a key study supporting leucovorin's autism benefits was retracted in January 2026 due to data irregularities. No FDA-approved broad treatment for autism spectrum disorder exists.

Caveats

The FDA's March 2026 approval of leucovorin was narrowly limited to cerebral folate deficiency (CFD), a distinct condition from autism — the approval made no mention of autism as an indication.
A key study previously cited for leucovorin's benefits in autism was retracted in January 2026 due to data irregularities, undermining the evidentiary basis for any autism-related claims.
FDA Commissioner Makary's earlier public suggestions that leucovorin could help 'hundreds of thousands of kids' with autism were explicitly walked back by senior FDA officials.

The Receipts

Study Details | NCT02839915 | Leucovorin for the Treatment of Language Impairment in Children With Autism Spectrum Disorder | ClinicalTrials.gov
ClinicalTrials.gov
Leucovorin lacks evidence to use as autism treatment, FDA says
STAT NewsMar 10, 2026
Retracted: Leucovorin Efficacy in Autism Spectrum Disorders
PubMedJan 15, 2026
Medication Treatment for Autism | NICHD - Eunice Kennedy Shriver National Institute of Child Health and Human Development
Eunice Kennedy Shriver National Institute of Child Health and Human DevelopmentApr 19, 2021
FDA finds little evidence that the generic drug leucovorin can help people with autism
PBSMar 10, 2026
What is leucovorin, the drug the FDA approved to treat autism? - The Guardian
The GuardianSep 27, 2025
No Broad Autism Approval for Leucovorin, Despite FDA Commissioner’s Prior Suggestions
FactCheck.orgMar 13, 2026
FDA Approves Leucovorin for Rare Brain Disorder, but Not Autism - Healthline
HealthlineMar 13, 2026
FDA Approves Leucovorin for CFD, Not Autism
Autism SpeaksMar 12, 2026

Filed Under

Autism Spectrum Disorder (ASD)leucovorinUnited States Food and Drug Administration

The United States Food and Drug Administration has approved leucovorin as a broad treatment for autism.

The Short Version

Caveats

The Receipts

Filed Under

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