A comparative study of acetyl l carnitine and caloric restriction impact on hippocampal autophagy, apoptosis, neurogenesis, and astroglial function in AlCl3 induced Alzheimer's in rats Acute L Carnitine Supplementation Does Not Improve CrossFit Performance: A Randomized, Double Blind, Placebo Controlled Crossover Study Effect of L carnitine on quality of life in covert hepatic encephalopathy: a randomized, double blind, placebo controlled study Research Science Update L Carnitine L Tartrate Supplementation Impr Prosource Intestinal microbiota metabolism of l carnitine, a nutrient in red meat, promotes atherosclerosis Nature Medicine