L carnitine reduces hyperthyroidism symptoms This medication is one of the most commonly prescribed medications for thyroid dysfunction. I'm talking about levothyroxine. And while it may silence symptoms for a time, it doesn't heal the thyroidand it Didn't another study show carnitine was good for the heart? What is the recommended adjustment for Synthroid (levothyroxine) dosage in a pregnant woman with pre existing hypothyroidism? L Carnitine and Levothyroxine: A Critical Interaction Warning Anabolic Planner l Carnitine Supplementation in Recovery after Exercise