Licorice Drops for Adrenal Fatigue

I have read that licorice is a more potent estrogen than estradiol. I am unable to post a link but here is one excerpt......"In a pretty meticulous analysis, Rudy Simons et al. found that several fractions of an ethyl acetate extract from licorice root displayed estrogenic activities at either the estrogen-alpha or estrogen-beta receptor that were more pronounced than the ones of the reference "drug", estradiol (E2)."

I think I would do greater research before taking licorice from adrenal fatigue and look for another option.