L carnitine reduces ammonia levels and alleviates covert encephalopathy: A randomized trial Therapeutic mechanisms and beneficial effects of non antidiabetic drugs in chronic liver diseases Acetyl L carnitine physical chemical, metabolic, and therapeutic properties: relevance for its mode of action in Alzheimer's disease and geriatric depression Molecular Psychiatry Frontiers The effect of L carnitine supplementation on lipid profile in adults: an umbrella meta analysis on interventional meta analyses