Haven't used it myself, though I want to (too expensive
: ) Anyway, my boss has, she is in the middle of menopause and it is the only thing that has helped her. Its an adaptogen, which is very helpful in mood management, relieving stress, creating energy.
On a more personal note, we (dh and I) had bought a meal replacement powder called Vega, mixed berry flavour. It has Chlorella and Maca in it. I didn't use very much, I think I had 1-2 drinks of it. My dh on the hand, had some every morning for a couple weeks, and well, I told him to stop because I just wasn't used to that much sex
Seriously, it was getting ridiculous! I blame the Maca
(I would recommend Vega otherwise, its a great product)