Levothyroxine: Công dụng, liều dùng và lưu ý tác dụng phụ So in order to help you get the most from your Synthroid treatment, it’s important to understand a few facts about Synthroid and what you can expect. RxList does not provide medical advice, diagnosis or treatment. A portion of the conjugated hormone reaches the colon unchanged and is eliminated in the feces. Long-term carcinogenicity...