You might be right about sage's effect on thyroid, not sure about that. It's always good to get lots of info on any remedy before taking it.

But re your note on sage essential oil, just wanted to clarify: a concentrated essential oil is a VERY different substance compared to an extract/tincture (plant preserved in alcohol). I've read that sage essential oil is one of the oils that should be used with great caution; it's not that widely available, and I wouldn't use it myself.

So when I said "extract" I meant tincture. Hope that clarifies.