A preliminary trial of ascorbic acid as supplemental therapy for autism

Prog Neuropsychopharmacol Biol Psychiatry. 1993 Sep;17(5):765-74. doi: 10.1016/0278-5846(93)90058-z.

Abstract

1. This study presents the results of a 30-week double-blind, placebo-controlled trial exploring the effectiveness of ascorbic acid (8g/70kg/day) as a supplemental pharmacological treatment for autistic children in residential treatment. 2. Residential school children (N = 18) were randomly assigned to either ascorbate-ascorbate-placebo treatment order group or ascorbate-placebo-ascorbate treatment order group. Each treatment phase lasted 10 weeks and behaviors were rated weekly using the Ritvo-Freeman scale. 3. Significant group by phase interactions were found for total scores and also sensory motor scores indicating a reduction in symptom severity associated with the ascorbic acid treatment. 4. These results were consistent with a hypothesized dopaminergic mechanism of action of ascorbic acid.

Publication types

  • Clinical Trial
  • Randomized Controlled Trial

MeSH terms

  • Adolescent
  • Adult
  • Ascorbic Acid / therapeutic use*
  • Autistic Disorder / drug therapy*
  • Autistic Disorder / psychology
  • Child
  • Double-Blind Method
  • Female
  • Humans
  • Male
  • Psychiatric Status Rating Scales

Substances

  • Ascorbic Acid