Carnitine and Thyroid Disease page 1 Life Extension 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 Hyperthyroidism treatment: A brief review with recommendations ScienceDirect How Should I Use Thyroid Supplements? Is it safe to take L carnitine with levothyroxine (thyroid medication)? L Carnitine intake and high trimethylamine N oxide plasma levels correlate with low aortic lesions in ApoE transgenic mice expressing CETP ScienceDirect