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Autism and L-Carnosine

Read more about L-Carnosine.

Effect of L-Carnosine on Autism

L-Carnosine is a substance manufactured in the human body, made by combining the amino acids alanine and histidine. The highest levels of carnosine are found in the brain and nervous system, the lens of the eye, and skeletal muscle tissue. Its exact function in the body is not known.

Research Evidence on L-Carnosine

An eight-week, double-blind, placebo-controlled trial of 31 children found preliminary evidence that the supplement carnosine at a dose of 400mg twice daily might be helpful for autism spectrum disorder.16


  1. Chez MG, Buchanan CP, Aimonovitch MC, et al. Double-blind, placebo-controlled study of L-carnosine supplementation in children with autistic spectrum disorders. J Child Neurol. 2002;17:833–837.