PDF) Oral L carnitine and pregnancy: real opportunity for narcoleptic women? L carnitine is an amino acid that is produced in your body that helps the body turn fat into energy. Carnitine is found in nearly all cells of the body and researchers have PDF) Carnitine status of pregnant women: Effect of carnitine supplementation and correlation between iron status and plasma carnitine concentration When to take L carnitine: Dosage, forms, and side effects