Bingo!!!

See, different manufacturers can vary by as much as 10% potency. This is enough to throw some people off as the therapeutic range for thyroid hormone is rather narrow. There is a real problem with people being switched from one maker to another by their prescription plans and their thyroid levels rising or falling as a result.

I would discuss this important fact with your endo. You should either 1)have your dose re-adjusted on this current generic and stick to this one maker or 2) better option would be to switch back to Levoxyl (doctor can specify no generic substitutions) at your current dose and see how things go. (T4 has a long half-life, takes a week or two for a new dose to level out, takes 6 weeks for the TSH to respond. You could speed things up slightly by simply skipping one day's dose, then starting the Levoxyl). Note that I am assuming you were stable for a while on that Levoxyl dose before and felt well on that dose - is that correct?

BTW - I haven't said congratulations yet!!!!! I'm so happy for you (Even though I'm still not completely sure who this is, but I read through some of your other posts and I THINK I have it figured out - I had it narrowed down to a few suspects, but your "voice" pretty much narrows it down to one. Geez, a lot has gone on in your life since we met!)

Let me know how the convo with the endo goes.

Ellie