Maca at least for me doesn’t really do anything to libido or erection quality. It just gives me bigger loads and subsequently bigger balls or vice versa. I’ve tried the extract formulas but they didn’t work so well for me. The bulk powder is better IMO and with the extract what are they taking out, perhaps what we want? Don’t know if source posting is allowed but mountainroseherbs sells it for $13 a pound. It doesn’t taste so good though so you might wanna try caps instead.