I've been using tongkat ali for a couple years (off and on) and recently came upon this article which seems really crazy! But is a fun read.
I do believe this stuff works. I buy the lj 100 which is a 100 to 1 extract. Recently my wife (58 yrs old) started it. If you use it, I recommend cycling several days on and a couple days off.
Anyway, check out the effect this guy claims
Increased semen volume with tongkat ali / Sexual energy - Nausea and diarrhea - Enhance energy
btw, it was even discussed on the Dr Oz show.