[Harmless Teddy Bear]

It is not something they want to talk about. There are a few medications (like thyroid medication) where going from one generic to another can really mess you up.

Short version is that any generic only has to be 80% as effective as the name brand. They tell you that it is "the same as" and legally it is. But really it is not. That 20% along with add in and fillers can mess you up.

In my case the first generic they put me on for my migraine worked just fine. The second not only did not work very well but gave me a sour stomach for a couple of day after the migraine.

Keep a record of which generic worked by noting it's manufacturers name. If the one they switch you to does not work as well or it is problematical in any way then you can request they go back to the one that worked. If they so no, and they may, then you can switch to a pharmacy that does carry that manufacturer's product. It is a pain to do but right now it is your only option.

[Trillian]

I’ve been told this by several doctors and experienced it myself. I really hate thyroid meds.

[MurrietaMadman]

You have made me a wealthy man by sharing your wisdom.

Thanks again.

[steve86]

Differences among generics and between generics and brand name often has to go with absorption characteristics. The actual drug content may be the same.