daisy,

I started on 25mg when I was in my 20's then a year later was put on 50mg, then a few years after that, went up to 75mg-- where I stayed for about 12 years-- but now my disease has rendered my thyroid useless so a few years ago I was put on 88mg. One of my sister's had her thyroid removed and she is on the same dose as I am.

I believe it varies from person to person. In time, I'm sure you and your doctor will find the best dosage for you.
Good luck and great to see you back after surgery!

Mandy