Dr Acetyl l carnitine has been compared to placebo treatments. It's also been compared to standard antidepressants. Most of those studies lead to the conclusion that acetyl l carnitine works like Frontiers L Carnitine and Acetyl L Carnitine: Potential Novel Biomarkers for Major Depressive Disorder Acetyl l Carnitine in the Treatment of Peripheral Neuropathies: A Narrative Review Pain and Therapy Springer Nature Link Acetyl L Carnitine Arginate, 90 Capsules L Carnitine Linus Pauling Institute Oregon State University Acetyl L Carnitine 500 mg (60 Count) Compounding Pharmacy of America