I have been on Synthroid for about 10 years. I've been taking do...

The side effects I have noticed have included weight gain, depression, anxiety, dry skin, and lethargy. None of these have been extreme, and my thyroid panals (TSH, Free T4, and T3) all come back within normal range when checked.

Because I was at the low end of 'normal' my Endo increased my doasge from 112mcg to 125mcg to my current 137mcg. It's stopped my weight gain, and since i've been working out regularly for years, the weight is finally starting to come off.