Frontiers Thyroid hormones and carnitine in the second trimester negatively affect neonate birth weight: A prospective cohort study Successive thyroid storms treated with L carnitine and low doses of Methimazole The American Journal of Medicine Functional Medicine for Hyperthyroidism & Graves Disease 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