I was told by my oncologist (in 2005) NOT to take any herbal supps, only a daily vitamin and maybe extra calcium. the problem with most herbal supps is that they can contain soy or plant estrogen and that can be bad if you are er+.  So check with your dr as lots of changes have been made since 2005, but I still follow those guidelines. I know hot flashes SUCK! When I found out I had cancer I had a hysterectomy right before it, which sent me into menopause at 31!  My ob/gyn gave me these blood pressure patches to help (CATAPRES TTS-1 PATCHES) - ask about those or taking extra vitamin E, as one dr told me that would help. hope you can use this info to help you at you next dr visit!