Libido product, what are your thoughts on this product?

It is very rare for supplements to be tested using scientifically sound methods in humans (due to huge expense).  So probably no one can tell you with any honesty what affect that supplement, especially one with so many ingredients, will have on you, especially concerning a potential breast cancer recurrence. 

If you are taking tamoxifen, please be aware that many, many drugs interfere with tamoxifen effectiveness, so there is a big potential for supplements to also interfere with tamoxifen effectiveness.

Sorry. I know it stinks.  I could also use some help in the mojo department but am not confident that anything is safe.  I have a theory that women on tamox may actually be safe, even if getting a little estrogen since the whole purpose of tamox is to block estrogen receptors in breast tissue.  That is why it is helpful in reducing recurrence in premenopausal women (who still have much estrogen floating around in their bodies) - because the tamox is effective at blocking estrogen effects in breast tissue.  But I have no data to support this - its just my theory. 

Edited to ad: Without rigourous testing, I would not consider it safe to supplement with estrogen.  I work in the science field - and I see perfectly rational theories fail again and again. Many/most? theories regarding complex issues turn out to be worthless. 

Best - Jackie

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I've seen several conference presentations in which dong quai killed breast cancer cells in a test tube.  Donq quai is more like progesterone. It promotes progesterone and vaginal lubrication. It also works the same way progesterone and iodine do to lengthen menstrual cycles which have become too short due to lack of progesterone.

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That's such a complexity of ingredients its hard to believe anyone could give you the lowdown on it.  I see tribulus listed as the second ingredient.  Its a know libido booster.  It was originally thought to be a lutenizing hormone mimic, which then should cause increased hormone production.  Bodybuilders and weightlifters flocked to it in the belief it could increase testosterone production.  I believe that theory is now shot down, and how it actually works is unknown.  Yet there are many studies verifying that in animals, it does boost libido.  But the problem as to what it might do to breast cancer cells is no doubt unknown.

 Yes, testosterone does convert into estrogen.  That's what's known as aromatization, and is the target of the aromatase inhibitors.  What I'd like to know is whether a non-aromatizing androgen (and thus incapable of converting to an estrogen), such as winstrol would be safe.  Its definately known to boost libido (so say female bodybuilders who have used it).  You'd need to talk to an endocrinologist.