L Carnitine for Weight Loss: How It Works, Dosage & Best Supplement Zeelab Pharmacy The Role of l Carnitine in Mitochondria, Prevention of Metabolic Inflexibility and Disease Initiation Frontiers The Effects of L Carnitine, Acetyl L Carnitine, and Propionyl L Carnitine on Body Mass in Type 2 Diabetes Mellitus Patients What is L Carnitine, L Carnitine is an amino acid that plays a role in energy production and fat metabolism. Its found in foods like red meat, fish, and dairy, and also available as a supplement.,