I have tried it before and can say that it does make in increase in precum. I bought a bottle that has 100 mg gel caps and it says to take 1-3 daily. Some days I took 1, some days I took 3. While it did make me produce more precum, it also made it uncontrollable and I really didn't like that!! Although some may find it intriguing I was not a fan of walking of sitting on the bench in the locker room and having a squirt come out!