Short chain carnitines in adolescent major depressive disorder: Associations and biomarker potential ScienceDirect Acetyl L Carnitine, 100 Vegetarian Capsules Preventive Role of L Carnitine and Balanced Diet in Alzheimer's Disease Acetyl L Carnitine 500 mg 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,