l-carnitine alternative medicine review Comprehensive of the expanding roles of the carnitine pool in metabolic physiology: beyond fatty acid oxidation | Journal of Translational L-Carnitine Deficiency and Therapeutic Uses
Description
Post-workouts (recovery) Recovery supplements also often come in the form of drinks

Metabolites 2020;10(2)

Assembly of the L-Carnitine Biosynthetic Pathway After efficient enzymes for the last and penultimate step of the L-carnitine biosynthetic pathway had been identified, enzymes for the first two steps were selected: TML hydroxylase and an HTML aldolase (Supplementary Table 1)
Journal of Clinical Investigation, 129 , 373387

For workout performance, take it 30 to 60 minutes before exercise to help the body use fat for energy and delay fatigue

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