L carnitine supplementation for the management of fatigue in patients with hypothyroidism on levothyroxine treatment: a randomized, double blind, placebo controlled trial. Semantic Scholar Graves' Disease and the Manifestations of Thyrotoxicosis Endotext NCBI Bookshelf Exploring the potential anti thyroid activity of Acetyl L carnitine: Lactoperoxidase inhibition profile, iodine complexation and scavenging power against H2O2. Experimental and theoretical studies ScienceDirect Nutritional Weight and Wellness :: Symptoms and Support for Hyperthyroidism