N.O. Monster Nitric Oxide Booster with L-Arginine – Extreme Pumps for Strength, Muscle Growth, Pre-Workout Support – Boost Energy, Stamina & Endurance – 120 Capsules, Made in The USA

I will be updating as i am reviewing the supplement until beginning to the end. Not everyone reacts the same way to a supplement as others may due to certain ingredients changes of chemistry in your body , genetics and etc. This N.O contains Glutamine which a lot of people say cancels the effect of N.O production, but i beg to differ. I stack this with Gluta-Lyn 1500 and Testofreak. Going on with this supplement: Pros * Feeling of you being able to take on the world * Veins pumped * Increased blood flow * Being able to push those extra reps you couldn't before. Cons * Increased heart rate i believe from the caffeine im very caffeine intolerant. * Increased bladder * Insomnia I took 2 in the morning didn't feel nothing took 4 later that night daily intake was 4 but didnt feel much from 2 so im guessing my rapid heart beat came from that. I took this supplement once i am defiantly a keeper on this. ----------------------------------------------------------------------------------------------------------------- 3-4 times taking before i wrote this review still get an amazing pump , but i feel numb like i can press through the fatigue don't push too hard with this some times i feel like i'll tear a muscle. ------------------------------------------------------------------------------------------------------------------ So I`ve been taking this for almost 4 weeks now and I am still convinced with this product the pump isn't as great as it once was I am guessing I am becoming tolerate to the caffeine or one of the ingredients in there. But I still got that rush to work out and take on anything, I've noticed my veins on my chest , biceps started showing out A LOT and I never had a vein on my chest it's pretty sick. I've noticed a lot of gains too my stretch marks are getting way wider than before. I should be taking pictures but I don't have time or even a camera :[ The increased bladder and heart rate went way down so at this point there really are no cons. ---------------------------------------------------------------------------------------------------------------- Alright almost done with the bottle can say 3-5 more workouts i have noticed insomnia on taking it i usually take it at 6pm wont be able to sleep till 1-3 am HIGHLY RECOMMENDED in the morning , you should take it 10mins before working out for the biggest pump. I am on a keto cut and i am gaining mass/strength while rapidly losing weight if you have any questions i haven't state please don't be scared to write a comment.

My wife and I have both been using this product as a pre-workout supplement for years and it is still just as effective as when we first began taking it. The ingredients help with blood flow and energy without causing the jitters. Strong enough to feel the effects without any unpleasant side effects. They are a medium size capsule so very easy to swallow. All in all a very good product.

Amazon messed up my order - I only received half my order. I called the distributor direct for n.o. monster and they made it right. They sent the second bottle out as we were speaking. I love the product and will continue using it. I'm 64 yes old bench 350lbs and believe this supplement gives me an edge in the gym. Larry V Note my previous one star review reflects Amazon's failure to ship the full order and I will continue to use this product. This supplement company stands behind their products!!!

I am always looking for that edge in the gym, and will take anything and everything to get where I want quicker. I take this stuff to an extent. I use it and stack it with muscle pharm assault. because I stack this with another product I dont take the full dose (4 pills) I only take 2. When I go to the gym, I have veins poping out of everywhere. I have them in my calfs, shoulders, arms, etc. When I take my stack of assault and this you really see a difference in your vascularity. My veins get huge and really noticable, and I have overheard people in the gym say "that guy has to be on steroids" lol, but I have never taken them and never will. these also seem to help with your pump, and give you energy to boot, but I dont know how much of that is the assault vs these pills. I have taken the assault by itself, and know a good portion if not all the energy is from that product alone. I do think this product helps more with the Vascularity of my body while working out. Good product, but just like with anything make sure you drink LOTS of water. A.) to get it flowing through your system, and B.) to flush it out of your system before it does damage to your organs :)

I've been using this N.O. product for a couple weeks and I've just recently started experiencing what other reviews have talked about. I started getting red rashes on my arms. My neck turns super red along with my ears. This is temporary tho. Usually starts 30 mins after I take them then goes away after about 15 minutes. Overall solid pumps just beware of the after effects. Update 06/06/13 One tip I've noticed for this product. If you experience the red rashes it might be because you didn't take enough water. I've noticed that when I drink a half to full liter of water I don't experience the red rashes. I hope this helps.