In subclinical hypothyroid i can start treatment by 12.5mcg thyroxine .my age 22year?

Dose of thyroid?: You need to speak to an endocrinologist (e). No one can advise you about your dose of thyroid replacement hormone without knowing your lab values, especially your tsh. Ask your physician to refer you to an e to answer your question. Starting thyroid replacement therapy without the direction of a e is a risky proposition.

Too little dose: Dose is so low you may not even need to take it.