PDF) Adding L Carnitine and Selenium to Methimazole in Graves' Disease: A Prospective Randomized Trial on Thyroid Markers and Quality of Life If you've been diagnosed with Graves' disease, you may be wondering about treatment options. The three main approaches for treating hyperthyroidism are antithyroid medications, radioactive iodine therapy, and thyroidectomy (surgery). Each option L Carnitine, 99% 541 15 1 () (R) 3 Hydroxy 4 (trimethylammonio)butyrate, Vitamin BT ThyroSoothe: Tackling Hyperthyroid Symptoms With Ease