Full article: L Carnitine conjugated nanoparticles to promote permeation across bloodbrain barrier and to target glioma cells for drug delivery via the novel organic cation carnitine transporter OCTN2 Injectable vs Oral L Carnitine: Which Works Better? AWP Role of L carnitine in exercise training: Anti inflammatory, antioxidant, and metabolic interactions ScienceDirect Kinetics, Pharmacokinetics, and Regulation of lCarnitine and Acetyll carnitine Metabolism REBOUCHE 2004 Annals of the New York Academy of Sciences Wiley Online Library The bright and the dark sides of L carnitine supplementation: a systematic review Journal of the International Society of Sports Nutrition Springer Nature Link L carnitine is effective for both fat loss and athletic performance. However, oral L carnitine has lower bioavailability and can be harmful at high doses, so it should be avoided. , Even cardiologists