Nitric Boost Ultra

Doesn't mix perfectly, takes a few weeks to notice the effects

— hamster

Good for sustained daily energy, seems to support healthy circulation, stimulant-free.

— peter

I bought into the hype, hoping for some massive pump and performance boost in the gym. Honestly, it was just... okay. I felt a little more warmed up, maybe a slight increase in vascularity, but nothing like what other people are describing. For the price, I was expecting a much bigger "wow" factor. It gives me a bit of energy, but a cup of coffee does that for a lot less money. I'll finish the tub since I paid for it, but I probably won't be reordering. It's not a bad product, it just didn't deliver the powerful results I was hoping for. Pros: Mild energy boost, decent flavor. Cons: Effects were very subtle, not worth the premium price for me.

— Jenny paster

I'm in my late 50s and bought this less for the gym and more for overall cardiovascular health and daily energy. My doctor suggested I look into ways to naturally support my blood pressure. After using this for about a month, I feel a subtle but definite improvement. I have more get-up-and-go in the afternoons, and that sluggish feeling I used to get is mostly gone. I checked my blood pressure at the pharmacy kiosk, and it's been trending in a healthier range. It's not a miracle cure, but it's a solid supplement. The only reason I'm not giving it 5 stars is the mixability. You really have to shake it vigorously to get rid of all the clumps.

— john hames

Finally, a REAL Pump and Clean Energy! Verified Purchaser | Reviewed on: July 28, 2025 I've been lifting for over 10 years and have tried dozens of pre-workouts and nitric oxide boosters. Most are just packed with caffeine and make me feel jittery, followed by a hard crash. Human Nitric Boost Ultra is completely different. I take it about 30 minutes before my workout, and the effect is clean and powerful. The "pump" is insane – my muscles feel full and vascular, and I can push out those extra few reps that really count. My stamina has gone through the roof, especially on leg day. I'm not out of breath as quickly, and my recovery between sets feels much faster. It's stimulant-free, so I can even take it for my evening workouts without it messing up my sleep. The taste (I got the Berry flavor) is actually pretty good too, not too sweet or chemical-tasting. Pros: Incredible muscle pump, noticeable increase in stamina and endurance, no jitters or crash, great for evening workouts. Cons: A bit pricey, but for me, the results are worth it.

— Mahesh