I found this on WebMD for Vitex Chasteberry:
I actually bought fertilaid which has vitex, I read tons of positive review on both products, however if you have a regular cycle, taking these types of products can mess with your cycle as per many of the reviews I read... let me know how this works out :)
I tried it for about a month...I'm inconsistent. But I think it's good. I also gave it to my mom who's have menopausal mood swings...it seems to be helping. It helps stabilize your hormones.