lack of l-carnitine BPI Sports, CLA + Carnitine, Rainbow Ice energizer powder that can be taken anytime during the day or paired with an amazing fat burner to upgrade its effects and accelerate fat burning L-Carnitine | Linus Pauling Institute
Description
2006;119:e9e17

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Its an important precursor for several sex hormones, including testosterone

Exogenous L-carnitine is used clinically for the treatment of carnitine deficiency disorders and a range of other conditions