Most people think our L Carnitine is just about weight loss but it actually does so much more I'm honestly feeling healthier now than I ever have and that's me at When to Take L Carnitine for Optimal Training Benefits Transparent Labs Rooted Owl Cardio Support Capsules with L Taurine & L Carnitine, 1.8 oz., 60 Ct. Petco 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.