Carnitines: Sources, Function, and Mechanism of Action In mammals, the endogenous carnitine pool includes the un-esterified l-carnitine (l-3-hydroxy-4- N , N , N -trimethylaminobutyrate, LC) and many carnitine esters (acylcarnitines) with long- (i.e., palmitoyl-l-carnitine), medium- (i.e., octanoyl-l-carnitine), and short-chain (acetyl-l-carnitine, ALC and propionyl-l-carnitine, PLC)
And, it promotes a fat-burning process which supports overall metabolic function
Biology is not that simple
Layer four is cancellation friction some providers require email plus 72-hour notice, some allow online self-service with 48-hour notice, and once a vial has been compounded and shipped, that cycle is non-refundable across every provider