Yes, i have taken it.i bought 2 bottles and ran them for about 2 months. It cost around 35-40 bucks and last about 22-25 days depending on your lifting/intake req's. 2-3 scoops 1/2hr-45 mins before workout on empty stomach.Ok.. You will notice the rush it gives you,about 3/4 of rush you would get off stacker 2 w/ephed, very soon after ingesting it!! It's very uplifting,you can feel your body getting souped. What you make of the workout is what determines how good it will work for you. It's a very good product if you plan or already do train hard. You take it everyday you train and a scoop a day on off days and must drink 120 ounces of water per day!! It's not to bad,but it's useless to take if you cant' get in that amount of water and eat sensibly. I'm not fitness guru or bodybuilder but i would recommend trying it out. If you just want to put on weight/muscle mass i would stick to normal creatine(more cost effective/strickly for mass/size/power),but if your looking for a workout booster the NO-X is your answer. Hope that helps out,oh and just to let you know it contains stimulants so you metabolism speeds up a bunch,so it can make you gassy or dumping more than usual! Good luck.