I used reforvit-B a long time ago and I actually feel like it was better than any tabs I have taken. Better than naps or pink thais. I even got so that I looked forward to taking it, liked the taste! Felt like it was potent stuff. It seemed to hit be really fast. I would take it about 20 min before going to the gym and my muscles would get all full feeling early on in my lift. Great pumps, and all of those tabs I have taken have never measured up to that.