6 Benefits of L Carnitine Injections MedHealth 360 Injectable carnitine in 2 minutes., What it is, How it works, Why some athletes use it, Most people focus on add ons before mastering the basics. Nutrition quality, total calories, training, and sleep L Carnitine Injections: A Clinical Guide for Practitioners National Medical Resources Inc Injectable L Carnitine for Slimming: Does It Really Work? National Medical Resources Inc Subcutaneous Injection: What It Is and How to Give One