l carnitine function transports long chain fatty acids into mitochondria The Role of l-Carnitine in Mitochondria, Prevention of Metabolic Inflexibility and Disease Initiation CARNITINE HOMEOSTASIS, MITOCHONDRIAL FUNCTION, AND
Description
About 25 percent of our carnitine requirement is typically synthesized inside our bodies (from the two amino acids just mentioned: lysine and methionine)

Clinical trials show that 2 g/day for 6 months significantly reduces fatigue severity, improves cognitive functions, and enhances quality of life in centenarians

doi: 10.1210/jc.2017-01736
[DOI] [PubMed] [Google Scholar] 174.Srinivas SR, Prasad PD, Umapathy NS, Ganapathy V, Shekhawat PS

Ruggenenti, P., Cattaneo, D., Loriga, G., Ledda, F., Motterlini, N., Gherardi, G., Orisio, S., and Remuzzi, G