difference acetyl l-carnitine and l-carnitine Carnitine L-Carnitine. Differences, functions and method of use Life Extension Super R-Lipoic Acid

Dotted vertical line = day of final dosing day

Enhances metabolism

The direct relationship between tryptophan levels and depressive symptoms and fatigue has been demonstrated by Trp depletion experiments, as reviewed elsewhere [76], and is also of interest in the context of long-term COVID, as recent studies have shown a significant decrease in plasma Trp levels in PASC patients [48], and alterations in kynurenine pathway metabolites have been associated with cognitive impairment in long COVID patients [27], as well as with anxiety and depressive symptoms in COVID-19 survivors 6 months post-infection [66]

To frame it slightly scientifically L-carnitine transports chains of fatty acids into the mitochondria where they are metabolized under beta-oxidation