My wife is suffering from goitrous hypo thyroid with tsh 114 and t4 0.8. She took eltraxin 100mcg and after 20 days many and side effects occured like palpitation, increase in pulse rate, nervous, sleeplessness, feel like something beating in the thyroid and back of head, feeling like swinging of legs, feel like something running inside. Dosage reduced to 50 mcg. Even now she is having the same side effects. What should be the problem. Is these side effects go in duecourse? How to over come these. Checked with cardiologist and assured heart is good.