If you are like a lot of people, you may have never heard of carnitine but this important nutrient is critical for our body's ability to optimally burn fat required for energy. L Carnitine L Tartrate: 8 Key Benefits Dr. Lam L Carnitine: Benefits, Uses, Side Effects, and More L Theanine Vs L Carnitine: Can We Combine Them? Vinatura Supplements L Carnitine Injection Levocarnitine IV