Acetyl L carnitine for depression and mood disorders IHR Magazine Depression Linked to Low Levels of Acetyl L Carnitine in Psychiatry Study 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, Frontiers Discovery and validation of acetyl L carnitine in serum for diagnosis of major depressive disorder and remission status through metabolomic approach L Carnitine in the Treatment of Psychiatric and Neurological Manifestations: A Systematic Review