Overall Rating 
Product Claims
NO2 Black represents a quantum leap in nitric oxide science. First, NO2 Black sets the standard by giving you the purest Arginine-AKG (ArginPure™) Delivered with its clinically tested extended-release delivery technology, pHylex9™. Second, NO2 Black's revolutionary "NOS-Enhancing" peptide fraction up-regulates nitric oxide synthase (NOS) and increases your nitric oxide levels as much as 950% over baseline arginine derived nitric oxide (ADNO). Third, the NO2 Black formula includes alpha-lipoic acid, designed to boost your insulin sensitivity and nutrient uptake. Simply put, NO2 Black is the most potent nitric oxide generator ever conceived. Check below for NO2 Black reviews.
Comparisons
NO2 Hemodilator | Nitrix | NO Xplode | Nano X9
13 Oct 2008 - Jermaine of England, UK writes:
To me MRI is a magical supplement! I take N30 and just started taking NO2 Black (2weeks ago) to me NO2 Black is just the same as taking N30 the only differnce is when taking NO2 Black you alway have the nitric oxide in you! with N30 its a 75min blast of NOxide! The down side to this is when i wake up in the morning my arms hurt like mad, probally due to the fact im lifting more weight then i should be, im only light weight 138lbs and i can push more then the big guyz at the gym since taking MRI = its truly amazing! Not sure if im going to reload on the NO2Black cuz N30 was doing the job before i started taking NO2Black probally has made me alittle more stronger! A Must Have
21 Aug 2008 - Kevin of Florida, USA writes:
I have just started working out after not being in the gym or lifting a single dumbell in 3 years! I was never incredibly muscular before but I always maintained good lean mass with some size. For the first time, bought a bottle of NO2 Black less than 2 weeks ago and the results were showing within the first 3 days of use! It has helped me lose weight and gain serious mass and I am seeing a return of the body I had 3 years ago and I am more vascular than ever before! I am now 40 years of age and I still look like I did when I was 25. NO2 Black is for the serious only! I highly recommend this awesome product!!!!!
29 Jun 2008 - tim of Kentucky, USA writes:
I've been taking this product for about three weeks now and I'm loving the pumps. Not only are veins bulging during my workouts, thier still there hours afterward. I've never experienced another NO supplement like it.
16 Jun 2008 - Chuck of Hawaii, USA writes:
I am now on my second bottle and I would recommend this supplement to anyone. I read the previous reviews before I decided to purchase this product. I am very satisfied and it has lived up to it's claims. My body alway feels tight and hard and has increased my strength and focus in the gym.I started lifting the beginning of March after a 5 years hiatus.I took Muscle milk for the first two weeks then added glutamine. I added NO2 black around 3 weeks ago and I'm starting my second bottle. I will add creatine for a cycle and see if i get more gains.My gains in the gym has been remarkable and have received numerous compliments on how fast my progression has been both in my weight advancements and body muscularity.If you are going to lift hard I would definitely spend my money on these supplements.No side effect.
15 May 2008 - mike of New York, USA writes:
been taking this product for about a week and a half. first couple of days didnt really see much, (i guess you have to load on it first)but now i feel vasculated when im not working out and the pumps are great. definatly recommend this product!!
28 Apr 2008 - b-rizzle of New Jersey, USA writes:
good product.seen some gains.good pumps. after the 1st week of using it your veins deffintly stick out more......deffinatly should buy it..worth it
7 Apr 2008 - Raymond of New York, USA writes:
When I first took the product I realized it needed a first week of cycling to stack your body with the nitrix. After a week, your veins do start to vasculate but not dramatically but its definitely noticable. In addition, your strength does start to increase. Around the second week, the effects started to really show when my veins that I never had before in my forearm and chest arose. Also while taking this product you do have a tendency to drop some pounds since the nitrix being placed into your system oxidizs that fat and therefore turing it into muscle as you work out. Assuming you workout regularly, and drink enough water with a proper diet. The 3rd week and 4th week had some good effects but not as well as the 2nd week. This most likely due to your body getting used to the levels of nitrix your are taking in.
7 Apr 2008 - jeff of Ohio, USA writes:
this product is really good ...i noticed more veins and bigger veins while on it it does keep you pumped from am to pm. i am now using vitamin shoppe nox 3000 and its no comparison no2 black is really good only downside is its very expensive...
3 Apr 2008 - Shawn of Oklahoma, USA writes:
I worked out a lot in the Marines and had noticed a nice little increase with Phosphagen, which was top at the time. About 7 years later I start back up and see that this is great, so I add this to the Phospagen and protein products I was taking. Before: Naturally motivated, did my workout, sometimes leaving out some sets or just a few reps, runs never lasted the set time. Felt better from cardio and "weak" work-outs. After No2 Black: Highly motivated all day, complete work-outs and sometimes add another set to my supersets. While running my breath does seem to go deeper,I finish up runs now. Have more energy throughout the day, and most importantly to me, I can't wait to hit the gym for an awesome workout. This product makes me work out harder and I wanted to share. Trying with Cellucor M5 starting tomorrow (May just go tonight!!!).
25 Mar 2008 - andrew of Missouri, USA writes:
I just finished one 180 cap bottle and just started seeing results probably less than a week ago. I'm probably gonna buy another bottle today to get the full effect because it seemed to start working. I did notice strength gains earlier but I probably would have anyway, but my veins started pumping a lot more recently and I want to keep this going. I would conclude that it works differently on everyone.
21 Feb 2008 - Anthony of Nebraska, USA writes:
This is an excellent product, but you have to take it right. 30 minutes before breakfast on an empty stomach, and do NOT take it with a protein shake. Ed Byrd (owns MRI) has said if you use it with a shake, the NO2 competes with the amino acids in the protein to be absorbed into your muscles, meaning you dont get the full effect. Whole proteins in foods are what you need when on this, and also drink a lot of water. Other than that, this helps with vascularity as well as endurance. I have personally noticed more endurance than strength with this, but if helps push out the last rep and definately helps with cardio if you are a runner, boxer, or whatnot. Definately worth the money.
11 Feb 2008 - Mike of New York, USA writes:
I just started taking this product about 2 weeks ago and already i can notice the amazing pumps and strength gains that is mentioned on the cover. i highly recommend this product to anyone who is at a lifting plateau or just needs more of a pump when your at the gym
11 Feb 2008 - tommy of New York, USA writes:
I have been using this for a month now and ive been getting great pumps on this, before i was on this i was doin 185-2 if that, now im reppin 185-6/7 and my max ski rocketed 235.Just drink alot of water and eat right and you'll see results quick.
26 Jan 2008 - Pete of Michigan, USA writes:
I really thought this product worked great made me alot stronger and gave me great pumps and increased vascularity i could always feel it kinda in me even when i wasnt workout out the only problem i thought that came from it was random headaches and its pretty expensive
26 Jan 2008 - Derek of Massachusetts, USA writes:
This is the best nitric oxide supplement out there. MRI is a company that always comes through and they did it again. I just started taking it last week and it has given me great pumps. I have tried numerous NO supps but this is hands down the best so far. IT is a little pricey but you get what you pay for, and it is worth it.
25 Jan 2008 - Cindy of New York, USA writes:
This is by far the most potent product I have ever used. I've been involved in fitness and training for about 8 yrs. I've always had a lean build and my arms and hands have always been veiny. This product literally makes the veins look like they are going to pop through my skin. It is totally insane, to the point where I've been told my arms and hands look completely freaky. lol And they are like this ALL DAY LONG!!! Some of my veins look as thick as my finger. Totally awesome results.
19 Jan 2008 - kev of New York, USA writes:
I am on my third week with NO2 - black, and it i have experienced noticible increases in vascularity, pumps, strength, and fullness of muscles. I've been stacking it with Black Powder which definitely helps in my opinion. Overall a great product. No negatives in my opinion.
17 Jan 2008 - Carlo of North Carolina, USA writes:
This is the first day I have been using No2 Black and I was lifting the gym up and down and I was`nt never tired. I had an incredible Vascularity and and pump. This product is the best ever, and it kiks Muscletch Advertisings in the butt. Buy it ! There is no way it cannot work. Shocking!!!!
8 Jan 2008 - spencer of Connecticut, USA writes:
I'm on my third week of this stuff my strength has increased, im rarely ever sore anymore so recovery is amazing, and i can breath much easier while doing exercises. I also noticed those reps i get stuck on i grunt out instead of usually failing. But just because the recovery is good doesn't mean you should be overtraining because on this product you might feel you need to lift more. Also i am always hungry and have gained a bit of lean mass. I drink mad water and am on muscle milk collegiate and it works great. funny thing is i'm not even in full swing yet it'll keep getting better and better as i go on.
8 Jan 2008 - spencer of Connecticut, USA writes:
I'm on my third week of this stuff my strength has increased, im rarely ever sore anymore so recovery is amazing, and i can breath much easier while doing exercises. I also noticed those reps i get stuck on i grunt out instead of usually failing. But just because the recovery is good doesn't mean you should be overtraining because on this product you might feel you need to lift more. Also i am always hungry and have gained a bit of lean mass. I drink mad water and am on muscle milk collegiate and it works great. funny thing is i'm not even in full swing yet it'll keep getting better and better as i go on.
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