I think it is to prepare your body for ovulation? It's either a derivative of or another name for Chaste berry tree. My naturopath prescribed a product called Vitanica Pregnancy Prep to me, that I really like (and actually got pregnant within two months of each time I used it-although both ended in loss). It has Chaste berry tree extract in it as well. The idea is for it to help balance your hormones. some of the other ingredients are to increase circulation to the region, improve cm output, and balance you out. I actually just purchased some on Amazon today because I'm starting ttc back up again after an ectopic has finally resolved itself.
Sorry to blab at you! Hope I answered your question.