Remember I posted in your thread and told you the exact same happened to me?!! No improvement on the 50mg, but once I switched to 75mg I felt AMAZING!!
HOWEVER... I've got bad news.. It's my 3rd week of the 75mg and now I'm getting HYPERthyroid symptoms.. including racing heart, chest pain, jitteryness
Hopefully this doesn't happen to you as well!
I have no idea what's next. Going to see doc on Wednesday.