Rx Item Levothyroxine 100% Powder(Non Sterile Pharmaceutical Grade ) 1Gm B L Carnitine and Levothyroxine: A Critical Interaction Warning Anabolic Planner What is the recommended adjustment for Synthroid (levothyroxine) dosage in a pregnant woman with pre existing hypothyroidism? L carnitine reduces hyperthyroidism symptoms Thyroid medication use as an assisted bodybuilder should be approached with caution and based strictly on individual neednot just because it's what you do during prep. Too often, both competitors and non competitors