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Short answer: it sure is

In addition to these proposed fat and lactic acid fighting capabilities, L-Carnitine is also thought to be a potent antioxidant supporting and protecting both brain and muscle functioning at the highest levels.*2 By reducing free radical damage in the brain, its thought that L-Carnitine may even enhance cognition, reduce depressive symptoms, and improve sleep.*

Infertile men with varicose veins in the scrotum (varicocele) took carnitine for 6 months (250 mg, 4x a day)

Drink plenty of water Meth users often avoid drinking water while high, instead reaching for sugary drinks and foods

doi: 10.1016/s0022-3476(89)80284-7