l-carnitine alternative medicine review Deficiency and Therapeutic Uses Frontiers | L-Carnitine and Acetyl-L-Carnitine:

Targeting of Fn14 prevents cancer-induced cachexia and prolongs survival

Arthur Beaudet has been following clinical and genetic clues in patients with autism spectrum disorder and experimental results in animal models that have led him to propose that the lack of carnitine, a nutrient needed for the normal development and workings of the brain, the liver, the heart and other muscles, might be involved in triggering mild forms of autism

We discuss the failure of previously tested antioxidants, neuroprotective agents, anticonvulsants and antidepressants as therapeutic or preventative strategies, and suggest individualized, mechanism-based therapeutic options for CIPNP associated with each of the three main drug groups

L- amino acids are essential for protein synthesis and energy production, and mammals (including humans) synthesize amino acids almost exclusively in the L- configuration.75 In supplements, L- or D- may be more informed by bioavailability, as the body may better absorb the L form of one amino acid or the D form of another

There is some indirect evidence to suggest that excess lysine in the diet may increase endogenous L-carnitine synthesis