l carnitine weight loss mayo clinic L-Carnitine Consumption, Its Metabolism by Intestinal Microbiota, and Cardiovascular Health L-Carnitine: Benefits, Side-Effects, Uses, Dosage

doi: 10.1016/j.fertnstert.2005.03.064

A recent study suggested that plasma levels of 5-MT, a compound related to serotonin metabolism, may be decreased in CFS patients, but this has been interpreted as a confounder caused by serotonin-selective reuptake inhibitor (SSRI) use in these patients ( The principal role of carnitine is to transport long-chain fatty acids into the mitochondria for energy production via beta-oxidation ( While carnitine supplementation could have benefits, some recent studies suggest that chronic oral L-carnitine administration may be associated with an increased risk for atherosclerosis via increased trimethylamine (TMA) and/or trimethylamine N-Oxide (TMAO) levels ( Mitochondrial dysfunction has been suggested to contribute to CFS ( The mechanisms that link carnitine intake, S-5-HT, and fatigue, in both CFS and hypothyroidism, are yet unknown

After taking L-carnitine for 10 days, the scientists observed a significant increase in labeled CO2 in the exhaled air, which indicates a significant increase in fat burning 1

Power calculation for the associations of genetically predicted l-carnitine and acetyl-carnitine with cardiovascular disease and its risk factors