l carnitine benefits running L-carnitine can boost your endurance... But give it time 💥 L-Carnitine: The Energy Booster

Cizkova D, Kakinohana O, Kucharova K, et al

J Formos Med Assoc

l-Carnitine and normal saline were administered by intraperitoneal injection once a day for 28 days in total (2 rats spermatogenic cycles)

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Only a fraction of L-Carnitine is absorbed during oral digestion

L-Carnitine acts as a fuel by carrying stored fat to the mitochondria, where it is burned and converted into energy