Hi Flora, sorry for the late reply. Thank you for the informative response. I asked regarding fertility and estrogen because I tend to be more on the estrogenic side. So I would like to enjoy these medicinal herbs without it making my hormonal system imbalanced. Soy I definitely avoid but would be saddened if Cistus Incanus was estrogenic. It is such a miracle herb. Was looking to combine Cistus Incanus, Chanca Piedra and milk thistle for a better functioning gut and liver.