Acetyl L Carnitine aSquared Brands Acetyl L Carnitine 500 mg Capsules Exceptional Quality Momentous Acetyl L Carnitine Supplement (ALCAR) 500 mg Superior Labs Acetyl L Carnitine (500 mg) SFI Health US Acetyl L Carnitine Hydrochloride LKT Labs When nutraceuticals show benefit as antidepressant add ons, it's usually not because they're acting like drugs. Most antidepressants target neurotransmitters. Response is often limited by other factors (inflammation, nutrient status, energy metabolism