Raspberry leaf tea... does it work? 🤔

Ju
My sister just bought me a huge bag of raspberry leaf tea because she said is good for when u trying to conceive, I have never hear anything about it but ... I'm down for it!
Just that I have no idea how much am I suposed to drink? Does anybody here knows anything about this? 
Just found this link about it http://natural-fertility-info.com/red-raspberry-leaf.html
Have any of u guys tried it? Or any experience aboht it?