New evidence suggests those with autism don’t have a normal ability to produce cellular energy, which can damage cells and impair cognitive function. L-carnitine works at the cellular level to convert glucose to energy.
In one study, 30 children aged 2 to 8 with autism took 45 mg of L-carnitine per pound of body weight, or a placebo. After six months, while the placebo group had not improved, the L-carnitine group had better scores in tests of verbal and non-verbal communication, using objects, fear and nervousness, and interpersonal relations. Doctors said L-carnitine
was safe and significantly improved autism symptoms.