Frontiers Carnitine and Depression Acetyl L Carnitine Could a mitochondrial metabolite known as acetyl L carnitine (LAC) yield a new biomarker for depression and potential new therapies? Dr. Carla Nasca, an @nyugrossman assistant professor of psychiatry and of neuroscience and physiology, Effects of Long term Acetyl L carnitine Administration in Rats: I. Increased Dopamine Output in Mesocorticolimbic Areas and Protection toward Acute Stress Exposure Neuropsychopharmacology Short chain carnitines in adolescent major depressive disorder: Associations and biomarker potential ScienceDirect Acetyl L Carnitine Core Nutritionals