question on supplement

mom2daughters

I posted this under another topic, but I did a search and found that there has been some discussion about phyto-estrogen adn black cohosh.   Like me, my Sister-in-law has BC, I believe she was stage 2,  ER/PR pos, had a single mastecomy.  She is 2 years out, chemo/rads and is in her late 50's. 

We were together this past sunday for mothers day and she mentioned to me that she has been taking a supplement from GNC called Phyto-estrogen. It was really helping her with her hot flashes.  I was very  surpised she was taking it since I thought it would produce estrogen. I am not sure what else she is taking, we were talking about menopause symptoms when she mentioned this.

I told her I was told not to take any supplements.  I only take Femera and Effexor for hot flash problems. 

Isn't it unsafe to take a supplement like that.  I looked it up on-line and it has large amount of black cohas and non-gmo soy isoflavond extract, (not sure what that is), any help appreciated. 

I want to tell her not to take it, but I just wanted to make sure first.