Maiden,
I was taking 25micrograms of Synthroid each day.
I have been diagnosed with Hashimoto's officially. When I saw an infertility doctor in Summer 2013 she said my thyroid was low for TTC. She put me on Synthroid....then my Synthroid saga, a miscarriage, and I went off it in Spring 2014. I was diagnosed officially in Sept 2014 w/Hashimotos...and had much less hair on my head!
I take the daily recommendation of the Thyroid Support which is 1 pill 2x day.
I hope that helps!