Hi, I can’t answer because I don’t take synthroid (levothroxine) or anastrozole, I don’t have a thyroid but all of the synthetic meds they tried on me I had reactions so I’m taking GTA Forte II for thyroid and numbers have been great for a few years now.
They didn’t even try starting me on anastrozole until I had breast cancer, as I said tried I’m not taking anything because as it turned out I’m allergic to something in that med. they tried one other and same thing.