Depression treatment with natural acetyl l carnitine? Acetyl L Carnitine Dietary Supplement Seeking Health Acetyl L Carnitine 500mg Cognitive Support Carlson Acetyl L Carnitine Superior Supplement Products Science First Designs for Health 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,