Hi Winddove, just off the top of my head, definitely avoid any preparations containing Licorice Root, and another that I can't remember correctly, but the name sounds very similar to a common blood thinning med, courmarin, or cucourmarin, something like that. Anyway this herb is a source of the med, so needs to be avoided. Sorry, having an 'airy' day. I can't list a specific website, but one of my favorites I'll give hints for. It's a '.com' and its main info is, yep, you guessed it, herbs.
Hope this helps
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