Symptoms of B12 Lipotropic L Carnitine Deficiency VITAstir IV Therapy & B12 Shots CARNITINE Neuroneeds Carnitine Deficiency Primary Carnitine Deficiency, CPT I and CPT II deficiency YouTube 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. Frontiers Association between fatigue, peripheral serotonin, and L carnitine in hypothyroidism and in chronic fatigue syndrome