The benefits of L Carnitine in sports SPONSER SPORT FOOD AG Carnitine: the claims and why it may not work Your body already makes L Carnitine, so why do people take it as a supplement? Because while it helps burn fat for energy, it only works when paired with the right lifestyle., So before you jump on CARSON LIFE Liquid L Carnitine, Green Tea, Boosts Energy, Metabolism, Dietary Supplement, 16 Fl Oz Walmart.com When to take L carnitine: Dosage, forms, and side effects L Carnitine will not help you burn fat, no matter how convincing that influencer sounds. PMID: 10861338, Heres what most people dont know:, Your body already makes L carnitine using two amino acids