ThyroSoothe 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. Complementary therapies for feline hyperthyroidism IVC Journal L carnitine supplementation for the management of fatigue in patients with hypothyroidism on levothyroxine treatment: a randomized, double blind, placebo controlled trial. Semantic Scholar Role of carnitine in disease Nutrition & Metabolism Springer Nature Link