L Carnitine injection is recommended at 1 ampule every 2 3 days for best results. The L Carnitine is taken intravenously either by normal injection or using a butterfly needle. After taking this L Carnitine, you 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 Kinetics, Pharmacokinetics, and Regulation of lCarnitine and Acetyll carnitine Metabolism REBOUCHE 2004 Annals of the New York Academy of Sciences Wiley Online Library Role of L carnitine in exercise training: Anti inflammatory, antioxidant, and metabolic interactions ScienceDirect