Fertility tea, and when to start

So I went to target today after seeing the brand Pink Stork online saying it was I target. So I got the fertility tea, but now I’m just wondering when is the best time to start taking it. Is it a right time in your cycle to start it that it might work better? If anyone has tried it I’m just wondering. I googled it and some people say start the first day of your period for support all the way through your cycle but still would like more feedback.