Nitro XL Nitric Oxide Supplement

Reviews of Nitric Oxide Muscle Building Products

Our Nitro XL testers reported fast muscle gains and improved strength and stamina. In short, they felt like they were getting more from their workouts, and many said they were able to push their bodies much further than they ever had before. Nearly every one of our testers said they planned on continuing to use Nitro XL in the future. This was the best product we tested, and we give it a MUST BUY rating.

XtremeNO proved to be a pretty effective muscle building supplement. Users said they felt like they were building muscle more quickly, and they had more stamina to extend their workouts and hit the gym more often. It was the second most effective product we tested, so we gave it a tentative buy rating.

Force Factor was an interesting product. Some users reported experiencing slight increases in strength, stamina, and energy, while others felt it wasn't working at all. In short, it was a mixed bag of results, making it clear that Force Factor is spotty at best. It's certainly not a bad product or the worst out there, but we can only give it a do not buy rating based on its inconsistent performance.

NO-Xplode simply didn't get the job done in our testing. The formula just didn't seem to have any effect on users, and it never really got any better. It was a disappointment because we had seen NO-Xplode around the web before and heard its bold claims, but from our analysis, this nitric oxide supplement is a dud. We give it a do not buy rating.

Despite this product's heavy advertising tactics and celebrity endorsement by Mike "The Situation", NoxEdge Pre-Workout Tablets simply fail to deliver. This product claims to dramatically boost your muscle pump and load capacity, but our consumer test panel begs to differ, with less then 10% having experienced any improvement to their muscle-building efforts. We strongly stand by our do not buy rating for NoxEdge.

Compare Nitric Oxide Supplements

We've been hearing rumblings about the remarkable results produced by Nitro XL for quite a while now, and after hearing so many good things about it, we decided it was time to test it out for ourselves. We get our expert panel together and a team of volunteers, and we tested Nitro XL.

Like other muscle building supplements, we tested Nitro XL for its safety, effectiveness, ingredients, value, and customer satisfaction. We also included anecdotal evidence from other users in our overall ratings.

How did Nitro XL perform? Does the nitric oxide really fuel muscles and help them grow bigger than you ever thought possible?

Keep reading our Nitro XL review to discover our results.

About Nitro XL: Ingredients

Nitro XL ingredients immediately impressed us. The formula in this muscle building supplement is designed to increase the body's production of nitric oxide to help muscles grow fast.

Nitro XL ingredients include:

  • L-Arginine Alpha Ketoglutarate
  • L-Ornithine AKG
  • Arginine Ketoisocaproate
  • L-Glutamine AKG

Of course to you, these are just a bunch of scientific terms. What do these Nitro XL ingredients really mean? To keep it simple, each of these ingredients helps with increasing nitric oxide levels, boosting energy levels, reducing post-workout recovery times, and helping you get more from your workouts.

Nitro XL Pros and Cons

Nitro XL was an overwhelming success with our test panel. Those who used it said they were able to build muscle faster than they ever thought possible. Many were able to achieve muscle growth goals they had been trying to reach for quite a long time before using Nitro XL.

The other thing people really enjoyed about Nitro XL was that it reduced recovery time after workouts. This allowed Nitro XL users to get back to the gym more quickly so they could workout more and build even more muscle.

The only complaint we heard was from people who wished they had discovered Nitro XL a long time ago. Many felt that if they had known about Nitro XL in the past, they could already have achieved some amazing results.

Nitro XL: Overall Rating

Rated: 96 out of 100

When it comes to muscle building supplements, our team has seen its fair share of them. And we usually have some criticism for all the products we test, but Nitro XL is different. We can't find anything about this product to complain about. Simply put, it's the best product of its kind that we tested.

For this reason, we awarded Nitro XL a MUST BUY rating. We strongly encourage you to try Nitro XL for yourself.

Excellent Very Good Good Fair Poor N/A

Overall Score Complete Solution? Test Results Customer Service Recommendation
Brand Price      
Nitro XL $94.95




Must Buy
XtremeNO $89.00




Tentative Buy
Force Factor $85.00




Do Not Buy
NO-Xplode $89.96




Do Not Buy
NoxEdge $65.00




Do Not Buy