• INCREASE MUSCLE GROWTH WITH SUPPORTED TESTOSTERONE LEVELS: In a clinical study, calcium fructopyranose borate (CFB) was shown to increase total and free testosterone within 3 hours of a single dose equivalent to just over 2 scoops of Nitraflex.
  • INCREASE BLOOD FLOW AND ENERGY: This clinically tested, high-intensity pre-training formula has potent ingredients to help magnify energy, alertness, strength, stamina, pumps and free testosterone during workouts.
  • CREATINE-FREE, IDEAL FOR PRE-CONTEST PREP AND LEAN MUSCLE: Creatine causes water retention, which can make achieving a dry, hard muscular look even more difficult, so we left it out. NITRAFLEX is ideal for pre-contest prep and lean muscle physique.
  • BOOST BENCH PRESS STRENGTH IN 2 WEEKS: Increase bench press strength up to 10 lbs in just 2 weeks. Potent ingredients will increase energy for each workout while increasing strength.
  • INCREASE INTENSITY OF WORKOUT WITH MORE ENERGY: Contains unique ratios of compounds that help you remain alert, intense and focused while you’re flying from set to set with veins fully dilated and muscles pumped to the extreme.

I've used many brands and styles of preworkouts over the years and am impressed with this one for sure! Of the current generation of powders available, this is at the top for me with regard to effectiveness. It starts working fast and keeps going for a very long time. I've seen a definite increase in stamina in the gym and when I take it prior to any physically demanding work. The pumps are really good on this product as well. Nice muscle fullness and vascularity. It also seems to make me sweat a lot more than other products, which may be a plus or negative, depending on how you look at it. But I am VERY happy with the performance. I love that there is no creatine in this product. Creatine is a good supplement in some situations, but I prefer a "drier" look myself. As to the "test booster" part; I really couldn't care less about that since I have pretty high test to start with; but if it might help increase free testosterone with this boron formula, cool. Boron is boron...it might help some people, so it's cool that it's in there. Definitely glad I found this one.

Hands down the best preworkout out. Have literally tried everything. This was the first one I have reordered multiples in years! Blue Rasp or Black Cherry by far taste the best.

THIS STUFF IS GREAT. MY SON CALLS IT "EVIL BLUE JUICE". IT MAKES YOU FEEL LIKE YOUR ON CRACK. MY WORKOUTS HAVE GOTTEN LONGER AND BETTER SINCE USING THIS PRODUCT. I AM LIFTING HEAVIER AND MORE REPS. I EVEN USED THIS BEFORE I WENT OUT ON MY MOUNTAIN BIKE AND I SEEMED TO HIT THE CLIMBS HARDER. TRIED ANOTHER BRAND AND IT DRAGGED ME DOWN. WILL USE THIS FROM NOW ON.

dont really know what this is supposed to do but I would say my muscles like it.

There is no pre-workout that tastes better or provides more energy than this one for me at the moment. I really like this pre-workout before going to the gym, playing tennis, hiking, yard work or even sex. This is a great booster of energy that doesn't make you crash. It's definitely not for every day use, you must cycle this to gain all the benefits of this pre-workout and only use it when you feel you need an extra lift during strenuous activities.

In the past month that I have been taking this product, I noticed a sudden ability to just go longer and harder. While I would still get winded and exhausted, I found myself recovering a lot better and gradually making some noticeable changes. I am going to cycle off of this for 30 days and try something else, but if I start to digress I'm certain it was the Nitraflex.

I suppose this stuff works really well, I literally had heart attack after taking a dose and died for 3 minutes. God was so impressed with my gains he sent me back to spread his Swoly Word and to continue taking Nitraflex, So I do.

This is the only pre-workout that works for ME time and time again. I don’t “cycle” off of PW’s at all and I’ve loterally tried everything on the market and this is by far the best. No crash, constant energy.

This is one of the better pre workouts I have used. It provides a "clean" energy boost, rather than a huge initial rush of energy then a crash at the end. Consistent energy throughout my entire workout. It is a pretty potent preworkout with the amount of caffeine in it and it does keep me up at night if I take it past 6pm but overall this is a great pre workout that keeps you going.

one scoop is def all you will need for a boost before exercise or that long day at work. I prevent building a tolerance by skipping days so it remains effective for me.