L Carnitine & Lipotrophic Injections for Energy & Exercise: Portland Clinic of Holistic Health: Holistic Cancer Care & Primary Care Burn Bundle MICC & L Carnitine Injections for Fat Burn & Energy Olympia Pharmacy Understanding the Benefits and Uses of Carnitine in Health and Fitness Fitness Health Benefits of L carnitine injections are aplenty! This injection is a great way to boost your energy levels, help with weight management, and even promote healthy heart function. Studies show that Introducing L Carnitine, a game changer ingredient that can supercharge your energy levels and metabolism! Why L Carnitine? It may help to: Boost Metabolism: Enhance your body's fat burning capabilities, supporting your fitness goals.