Carnitine: the claims and why it may not work 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 Benefits of L Carnitine (especially for fitness enthusiasts):, Fat Metabolism Helps transport fatty acids into the mitochondria to be burned for energy., Improved Exercise Performance May enhance The bright and the dark sides of L carnitine supplementation: a systematic review Journal of the International Society of Sports Nutrition Springer Nature Link