Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/20/2025

Leukovorin in Autism Spectrum Disorder Treatment

Introduction to Leukovorin Use

  • The American Academy of Child and Adolescent Psychiatry does not recommend leukovorin as a standard treatment for Autism Spectrum Disorder (ASD) core symptoms, considering it a complementary/alternative medicine approach without sufficient evidence for routine use 1

Current Treatment Guidelines

  • The American Academy of Child and Adolescent Psychiatry practice parameters do not include leukovorin among recommended treatments for ASD 2, 3, 4
  • Evidence-based structured educational and behavioral interventions remain the foundation of ASD treatment 5
  • Pharmacotherapy in ASD should target specific symptoms or comorbid conditions rather than core features 6

Safety and Monitoring

  • The primary risks of leukovorin treatment include potential bone marrow suppression, though this risk is generally low when used alone 1
  • Complete blood count monitoring should be considered, particularly with higher doses 1

Clinical Decision Making

  • Ensure proper diagnosis of ASD using standardized criteria 2
  • Implement evidence-based behavioral and educational interventions as first-line treatment 5
  • If cerebral folate deficiency is confirmed, a trial of leukovorin might be considered under specialist supervision with appropriate monitoring 1
  • Monitor response using validated assessment tools for ASD symptoms 6

Important Considerations

  • Leukovorin should not replace established evidence-based interventions for ASD 3, 4
  • The American Academy of Child and Adolescent Psychiatry recommends clinicians discuss complementary/alternative treatments with parents 3, 4

REFERENCES

1

Risks of Treating a Child with Autism with Folinic Acid/Leucovorin [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025