Hi, is it unusual to need a slightly higher dose for only a short while? I ask because I was stabilised for years on 125 mcg and felt good then with underactive symptoms and a blood test showing a tsh of 10.7 had the dose raised to 150 mcg. Now a year or so later am feeling over medicated and like I want to return to the lower dose?????? I thought the need for thyroxine only ever increased?????