Zhou Nitric Oxide with L Arginine, Citrulline Malate, AAKG and Beet Root | Powerful N.O. Booster and Muscle Builder for Strength, Blood Flow and Endurance | 30 Servings, 120 Veggie Caps

Stunning effect. I use 2-3 capsules only on training days. Already at the warm-up you can feel the effect, the dumbbells just fly. I will order more and more and again. I rated it 6 stars of 5.

Previous review is below the dotted line UPDATED 3-17-2025 - 7 Years Later Hello! I was 30 years old when I started taking this. And you can see my regiment below. It was fairly rigorous. The product worked. Its great. During the 7 years between my original review and today some things have changed. I have gained weight. Lost weight. Gained it back, sign up for a 50 mile ultramarathon and get back in great shape again. This supplement is the only supplement I have stuck with. They changed their label. Ingredients and results are the same. They still recommend 4 capsules per use but I still suggest only taking 2. You will not find any additional improvement with 4 capsules that you would not gain with just taking 2. These capsules DO NOT GIVE YOU ENERGY. They wont keep you up at night, they wont affect your rate of breathing. All I notice is breathing more easily, without strain or huffing and puffing. Im in control of my lungs and they do not suffer when I push myself. I have taken these capsules late in the evening with the intention of running but end up just laying in bed until I fall asleep. They have 0 effect of sleep. I need to make this clear since some reviews are really suggesting that there may be stimulants in them. You do not feel the effect of these capsules unless you are straining your body. Hoping your lungs dont give out before your legs do. These capsules keep you moving but outside of that. It might as well be a sugar pill. In fact if you take these pills without exerting yourself. You will get no benefit. They are super subtle but they do work. I have been taking this brand for 7 years and have not experienced heart palpitations, or any weird side effect. I still buy this stuff and from my experience it is 100% benign and safe. Just take 2 capsules 20 minutes before a run and you are golden. The second supplement is electrolytes. I use saltstick brand for that. Potassium, Sodium, Magnesium. Take that with a few glugs of water and muscle fatigue is alleviated. —————————————————— My routine: I run every other day 3-5 miles and one 10 mile run on most weekends. Non run days are yoga and weights for about 1-1.25 hrs. I read all glowing reviews and decided to buy a bottle of this stuff having no experience with it. I originally started taking a half dose 30m before lifting and didn’t feel a difference. I couldn’t lift more or even do more reps than normal. What I did notice is that the time I needed to rest between sets was reduced. On days I ran I would take my half dose 30m before and hop on the treadmill or trail. Moving anywhere between a 7:40 to 10:00 minute pace. I did notice I could go faster and run longer and not be completely winded by the end of it. I then bought my second bottle after 45 days or so of this experience I had been very consistent with taking my half dose of this supplement before my work outs and decided to begin taking a full dose to feel the effect. If going from 0 to 2 was underwhelming than going from 2 to 4 was even more so. I then began to convince myself that my modest increases in performance were really from me pushing myself more due to my misguided perception that im somehow enchanced by beet root. So convinced of this I continuted to take the stuff until it ran out. This happened to fall on a run day. I hop on the treadmill and start at a 9:00 minute pace at 1% incline. 12 minutes in I was huffing and puffing, so much so that I had to reduce the incline to 0. My first thought was that I didnt eat right and I must be dehydrated. I recovered my breath and 25 min in I started to feel drained. The best way to describe it is that feeling of exerting yourself in altitude. I felt like I was spending 20% more energy and effort per mile. I didnt want to continue so I stopped and thought it was just my diet and water intake that day. Doing yoga and lifting weights or doing push ups the following day, I didn’t notice much of a difference. Lets say I do 3 sets of 25 push ups with 45 seconds in between each set with N.O. Pro. Without it, I will do the first set no problem and second set I will need a full minute of recovery and by the third I may end up only being able to do 17. For me thats within my range of performance and tolerance depending on how I feel that day. Sometimes its more sometimes less. My performance remained at this level with little change. My running performance was noticeable because it was so much less than ‘normal’. There was no way I could maintain a 8:00 minute pace for any appreciable time. For a week it didn’t hit me until I logged on amazon and N.O. Pro was suggested. “Ah-ha”, yes this must be it. I bought my third bottle and it was off to the races. Again I don’t “feel it” working and I think thats the idea. You only feel it when you stop. I also recommend taking less if you can get away with it, I don’t get much more benefit from taking 4 caps versus 2. Your mileage may vary but its true for me.

I was previously using a different brand of L Arginine and found that when taking the recommended amount of that brand I experienced water retention and leg swelling with pitting edema. It got so that I had to stop taking it as it basically crippled me and kept me from running on the treadmill or even walking my dog! I thought I'd give Zhou's product a try before totally giving up on L Arginine and have discovered that my body tolerates it very well. So far I take my pre workout dose at just two capsules 30 minutes before because taking the full recommended amount of 4 got me amped up just a little too much for my comfort. Then I take the remaining two capsules of the recommended daily dose about an hour before bedtime. My treadmill performance is now back to where I was before my adverse reaction to the other brand and an added benefit with Zhou's that I never experienced with the other is ...how to say this discretely without getting censored - let's put it this way, if you are a lumberjack then you'll definitely appreciate the increased ability to chop morning wood. Great stuff, thanks, Zhou! ***Edit: I've discovered another benefit. I've taken two types of BP medication (Lisinopril and a Diuretic) for much of my adult life even though those meds only brought my BP down to "borderline hypertensive". The Diuretic caused me to have to visit the bathroom on average every two hours even at night which makes for crappy sleep. Taking N.O. Pro, my BP dropped to "borderline low" so I quit taking the diuretic. Now my BP is in the perfect range. AND I sleep all night!! I'm hooked.

product seems to work as advertised. less fatigue during workouts allows for more reps and higher weight. nice pump. start to experience a headache after a day taking it. this is the reason for 4 stars instead of 5. headache does not go away until 2 days after stopping, and can get bad (I suffer from migraines and it feels similar without the aura). will try to cut the dosage in half.

I have used L-Arginine products in the evening, but rarely for a workout. I really like this one! This is the best NO supplement, in a capsule, that I have found. I have used multiple Zhou products and they have been all top notch! Great work guys! *update* 2-7-18 After finishing my second bottle I decided to see if I felt a significant difference off it. Oh My Gosh, did I ever! 5 a.m. workouts are hard, foggy headed all day, just plain "average" feeling all day. I can say, for me at least, that this makes a big difference in my day, my mood and my workouts. One other note: I noticed my recovery times following workouts are longer without this.... can't wait for my next bottle to arrive!

I was excited about this product. I liked the concept of including various Nirtic Oxide producers. I was hoping that extra synergy will offer visible benefits. Having an option to take capsules would make N.O. Pro a great product to use daily or while travelling. Yet, N.O. Pro did not show any visible benefits. How do I know? Well, I have been using bulk supplied L-citrilline and L-arginine. They produced measurable increase in energy, stamina and blood flow. Nothing similar has been noticed after using N.O Pro. Possibly I need to use it longer in order to build plasma levels. In that case Zhou Nutrition is welcome to send me another bottle (they did offer one if I wrote a review. I wonder if they still honor it). This is why I have to say that this product is NO Pro, that is it is not as effective as bulk amino acids (l-arginine at 5 gr, L-citruline at 2.5 gr) for ME.