dosing for propionyl l carnitine for e.d L-Carnitine – EHP Labs Acetyl L Carnitine
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10.1038/s41398-018-0183-x [DOI] [PMC free article] [PubMed] [Google Scholar] 103.Smeland O, Meisingset T, Borges K, Sonnewald U

In contrast, in obese human subjects under fasting conditions, the increase in urinary excretion of acetylcarnitine was markedly slower and at a lower level, suggesting a slower formation of acetyl-CoA derived from fat oxidation
The liberated L-carnitine immediately goes to work binding to long-chain fatty acids, creating acyl-carnitine, and pulling them into the beta-oxidation cycle to produce ATP

L-Carnitine treatment reduces severity of physical and mental fatigue and increases cognitive functions in centenarians: a randomized and controlled clinical trial
