What is Acetyl L Carnitine? Depression linked to low levels of brain molecule Hope For Depression ALC Acetyl L Carnitine Self Omninutrition Nature's Truth Acetyl L Carnitine HCL 1000mg, 30 Capsules, Non GMO, Gluten Free ALCAR Supplement Walmart.com 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 L Carnitine and Acetyl L Carnitine: Potential Novel Biomarkers for Major Depressive Disorder