Too much thyroid replacement will make you
hyperthyroid, which can be just as physically harmful as being
hypo. Some of the symptoms of
hyperthyroidism are:
- Weight loss despite increased appetite.
- Increased heart rate, higher blood pressure, nervousness, and excessive perspiration.
- More frequent bowel movements, sometimes with diarrhea.
- Muscle weakness, trembling hands.
- Development of a goiter.
- Lighter or shorter menstrual periods
I'm guessing that your doses are being adjusted based on TSH blood tests? If your TSH is too low, that means you're hyper and your thyroid dose needs to be lowered. You might want to ask your doctor what the results of your last tests were?
It can sure be frustrating when the dose keeps changing, but sometimes it needs to be tweaked a lot to get it right. Mine is so sensitive that I ended up having to alternate two different doses of Levoxyl (.175 and .200) every day to get my TSH in the right range.
And our need for replacement hormone changes with our weight gains and losses. So be glad that you have a doctor who is checking often and working to keep you at the right level - not too high and not too low.