carnitor vs acetyl l carnitine L-Carnitine | Linus Pauling Institute Carnitine: Which type is right
Description
This seems to suggest that it would be better to supplement with Acetyl L-Carnitine and R-Lipoic acid, rather than just L-Carnitine and Alpha Lipoic Acid

[DOI] [PMC free article] [PubMed] [Google Scholar] 24.Schmidt-Sommerfeld E, Penn D, Kerner J, Bieber LL, Rossi TM, Lebenthal E
ALCAR is often included in nootropic formulations and neuroprotective supplements, while LCLT is favored for sports nutrition and muscle recovery

Effects of acetyl-L-carnitine on regional cerebral glucose metabolism in awake rats
