I have had a Total thyroidectomy due to large goiter/lump. I'm confused about my medication. I was put on 150mg levothyroxine after op'. This was reduced end of Feb as my T4 was slightly high and my TSH low - T4 26(9-25) TSH 0.02(0.4-4). While I was taking 150mg I was managing to lose about 1 pound a week and I exercise alot. Since reduction to 125mg I am only losing an eight of a pound a week if I'm lucky. My stamina is awful, I've gone from being able to run 13 -17 miles non stop to only managing 3-4 miles on a good day. Just had T3 tested 5.8 pmol (3.5-6.5) and TSH was 0.03 mu/L(0.35-4.5). My GP wanted to reduce my levothyroxine to 100mg but I am worried I would then start to put weight on again so I said I didn't want to reduce it, he's agreed to leave it another 8 weeks and see how it is. I feel pretty good although I felt better on 150mg. I've read that if you have high T4 and low TSH this is hyperthyroidism but how Can I have that when I don't have a Thyroid. After surgery you're given T4 to prevent hypothyroidism!! I certainly don't have any symptons of Hyperthyroidism. Should I stick to my guns?
Another quick question does exercise eat up your thyroxine levels? Should one take higher dose when say running a race?