It's a herbal supplement that's said to aid with fertility issues, especially short luteal phase.
Sues, after we lost our first baby I was desperate to fall pregnant again asap and took EVERYTHING that could potentially help the process. I also took Chaste Tree Berry pills (I forgot the name of the brand, but it was a green packet, got it from Dischem). I fell pregnant on the second cycle, but cannot say if they worked as I also took Staminogro and Vit B6 (I think) plus DH and I BDd every day lol. I'm sure it can't do any harm though and if anything there's at least a placebo effect
Good luck!!!