GAT Nitraflex Review – Good Testosterone Booster / Pre Workout by GAT Sport?

Nitraflex (By GAT)




Key Nutrients


Safe to Use



  • Contains some good ingredients


  • Missing core testosterone boosters
  • Proprietary Blends
  • Potential Side Effects


Nitraflex is a supplement which is the combination of both a testosterone booster and a pre workout.

Made by GAT (German American Technologies), this is a supplement which has claims to help improve your overall gym session.

GAT Nitraflex is the flagship pre workout of their brand and is the main focus of what we’ll be discussing today.

GAT Nitraflex

GAT Nitraflex Reviews

This is our GAT Nitraflex review. Here we will be looking closer at several areas of this testosterone booster / pre workout to see how effective it really is.

In this review, we’ll be critiquing, the benefits, ingredients, side effects, is Nitraflex banned, is it a steroid and various quick looks at other Nitraflex products.

This is going to be a big review, and we suggest you use our table of contents section to find the sections that are most relevant to you.

Nitraflex Pre Workout

Despite having some claims to raise testosterone levels, the Nitraflex Pre Workout – is primarily a pre workout.

That said it does have a specific ‘testosterone-enhancing complex’ which is catered to handle that area.

Like with most pre workouts, Nitraflex contains a hell of a lot of caffeine and is advised to be taken 30 minutes – 1 hour before a gym session.

You can mix it in with water and we strongly advise you do not take it with any caffeinated drinks. Nitraflex is strong enough on it’s own, and the last thing you want to do is to ruin your gym session by entering with maximum jitters.

This would be easier to gauge and handle if Nitraflex didn’t have a large proprietary blend. All of the main ingredients have their dosages hidden which means you don’t know how much of each ingredient you’re getting or how effective it really is.

NItraflex Pre Workout

Nitraflex Benefits

GAT Nitraflex has plenty of benefits, it’s one of the most potent pre workouts on the market and may help to promote the following:

  1. Better Blood Irrigation
  2. Enhance Testosterone Availability
  3. Higher Energy Levels
  4. Stronger Focus
  5. Increased Stamina
  6. Heightened Awareness

However, how effectively it does this up for debate, with many users claiming it works effectively for promoting their gym sessions, while others saying there are better options out there on the market.

In the next section of out GAT Nitraflex review, we’ll be looking closer at the ingredients in this supplement to see how effective it really is.

Nitraflex Ingredients

Before we get started, here is the full ingredient list of GAT Nitraflex:

  • Niacin (as nicotinic acid) – 25mg
  • Nitraflex Proprieceutical Blend
  • Citrulline
  • Citrulline Malate
  • L-Arginine Malate
  • L-Arginine Alpha-Ketoglutarate
  • Resveratrol
  • Pterostilbene
  • Beta Alanine (as Carnosyn)
  • Caffeine
  • DMAE Bitartrate
  • N-Acetyl-L-Tyrsoine
  • Theanine
  • Raulwolfida Canescenes (extract)
  • Calcium Fructopyranose Borate (CFB) US Patent #5,962,049

As you can see, there’s a lot in here, and what’s more interesting is how big that proprietary blend is.

We’ve mentioned this earlier in the review, but proprietary blends are bad news. These are when supplement manufacturers choose to group individual ingredients in their supplement altogether under one larger dosage.

The problem with this is that you don’t know how much of each ingredient you’re getting or how effective it really is overall.

Not only that, not all the ingredients are as promising as they appear. Here’s our full report into the main ingredients in GAT Nitraflex:

Nitraflex Ingredients


From watermelons, Citrulline is a great ingredient to start off GAT Nitraflex.

It’s a potent, easy-to-absorb amino acid that can help improve overall blood flow. With better blood flow, muscle pumps, endurance and nutrient absorption all become easier for body.

After your body absorbs Citrulline, it converts into Arginine and promtoes your nitric oxide levels, which gives you that blood flow boost.

It’s an excellent addition to this pre workout testosterone booster combo.


This however, is not a good choice in GAT Nitraflex. Arginine is what Citrulline converts into after being absorbed – it’s effective for blood flow, but not when taken directly.

There’s a reason Citrulline is often chosen over Arginine – it’s much easier to absorb. Arginine is difficult to absorb when taken straight. It doesn’t usually have much of an effect.

Ideally, we’d like to see this replaced with more Citrulline to hopefully bring out the best benefit in Nitraflex – as we don’t know the dosages we think Citrulline just needs all the help it can get.


This is more of a supporting ingredient in Nitraflex. Resveratrol is an amino acid that is found in fruits like berries and grapes.

It doesn’t have much of an impact when it comes to performance or training, but it can help with blood flow for nutrient absorption.

Resveratrol can help improve how well you absorb the nutrients in Nitraflex and get more out of this pre workout / testosterone booster.


This is essentially a more potent form of resveratrol in Nitraflex. Although it has less research on it, it seems to be more effective at promoting blood flow and absorption.

This can help you to get more out of Nitraflex and see faster acting effects.

Beta Alanine

This is a good addition to Nitraflex for improving your overall gym performance.

Beta Alanine can help to buffer the acid in your muscles which improves your overall endurance and power output during a session.

The only thing that you should note with Beta Alanine is that it may cause parathesia. It’s a harmless condition which leads to the itching of both the hands and face.

As we say, it is harmless, but that doesn’t stop it from being distracting during a gym session.


The most potent ingredient in Nitraflex by far. Caffiene is a natural stimulant that is found in most pre workouts. Although the dosage isn’t fully disclosed, anecdotally the caffeine in Nitraflex is pretty high.

Caffeine is great for improving your overall energy levels, but it can also help with your metabolism, power output, focus and general alertness.


Not a good choice for the ingredients list in Nitraflex. DMAE is a component that was originally used in beauty creams to help reduce the appearance to wrinkles.

It eventually made it’s way into supplements with the idea that it may help to reduce cognitive decline. However, no real benefits have been seen – not only that, it appears to have caused birth defects in rats – which is not a good sign at all.

It’s not a good pick for Nitraflex.


This is an amino acid in Nitraflex that helps to manage your levels of the stress hormone cortisol in your system.

When your stress levels are high, it can become harder to focus – which can greatly affect a gym session.

By using something like L-Tyrosine in Nitraflex, your body has more support to keep you in the right mindset to do better in your sessions.


This is also a good nutrient for helping to improve your focus. Theanine is an amino acid that is commonly found in green tea.

It works by helping to promote relaxation and calmness. When combined with a stimulant like caffeine – it helps to balance out the jitters from it and give you better focus with high energy levels.

It’s a good combination to have in GAT Nitraflex.

Raulwolfia Canescenes

This is a nutrient that works in a similar way to Yohimbe bark. It may help promote energy levels and reduce appetite in Nitraflex.

However, it does have some mild links to side effects, which may cause you problems while training such as anxiety, gastrointestinal distress and hypertension.


The final ingredient that we’re looking at in Nitraflex, GAT’s CFB or Calcium Fructopyranose Borate.

This is a resource that is taken from fruits which contains a very small amount of Boron.

Boron can help (when dosed correctly) to promote testosterone and even help to reduce your overall levels of the female hormone estrogen.

The calcium angle may also help with bone density in this supplement.

Nitraflex Side Effects

When it comes to GAT Nitraflex, it may give the following potential side effects:

  • Tingling in hands and face (paresthesia)
  • Jitters
  • Fertility Risks (DMAE causes birth defects in mice)
  • Anxiety
  • Hypertension
  • Gastrointestinal Distress

These are all potential risks in GAT Nitraflex due to several ingredients in here, these are the DMAE, Beta Alanine, High Caffeine and Raulwolfia. They all have links to causing problems of their own.

GAT Nitraflex Hyperemia and Testosterone Enhancing Powder Side Effects

Nitraflex Hyperemia & Testosterone Enhancing Powder Side Effects

The testosterone enhancing powder in GAT Nitraflex Hyperemia is just a mix of form of calcium and boron – it’s not been linked to causing any side effects.

The main concerns were with the older version of Nitraflex which contained DMAA – a banned substance no longer in this supplement. It has high stimulant side effects – which could cause sexual dysfunction and other stimulant-related issues.

The new formula for GAT Nitraflex Hyperemia & Testosterone Enhancing Powder shouldn’t cause any problems for you on the T-Boosting side of this supplement.

Nitraflex + C

Nitraflex + C is not the same as the original GAT Nitraflex. It is a different version of the GAT Nitraflex pre workout, it contains slightly different ingredient profile with ingredients such as Green Tea and Guarana.

But the main difference is that Nitraflex + C actually contains creatine. Creatine is an amino acid which can help promote your body’s levels of ATP – which is what your body uses to carry energy to your muscles.

It is not the same pre workout as the original GAT Nitraflex that we are covering here, and we will discuss that in another review in the future.

GAT Nitraflex Banned

The older version of Nitraflex contained DMAA which is now a banned substance. Since this ban, it has no longer appeared in GAT Nitraflex. The current version of GAT Nitraflex is legal to to purchase and use from many stores all over the world.

The only ingredient that we suggest being wary of is Raulwolfia – as this is structurally similar to Yohimbe. Yohimbe is also a banned a substance and linked to potential side effects. Raulwolfia / Rauwolscine is as close as you can get to Yohimbe.

It’s not banned yet – but it could be with time.

Is Nitraflex a steroid?

GAT Nitraflex is not a steroid. It does not contain any hormones or any illegal substances which contain anabolic steroids. You will not fail a drugs test taking Nitraflex – as it is not a steroid.

It’s testosterone boosting ingredient may help raise your levels of the male hormone testosterone via natural means – but this is not the same as taking actual steroids.

Nitraflex is not in any way a steroid.

Nitraflex Reviews | Summary

As you can see, this isn’t the best pre workout / testosterone booster combination that we’ve come across on the market. Our review of GAT Nitraflex shows that although there are some good ingredients in here – they are overshadowed by how they are managed.

The first problem is the dosage. You don’t know how much you’re getting for the majority of the ingredients in this supplement and some of the ingredients may even cause side effects.

It’s one of the riskier pre workouts that we’ve come across, and we think there are better options out there on the market.

Our Recommendation:

Performance Lab Sport Pre Workout

Best Pre Workout:
Performance Lab SPORT Pre-Workout

Performance Lab knocked it out of the park with their Pre Workout. With the best ingredients, servings and overall purity, it is the most effective pre workout that we've seen on the market to date.

If you want a pre workout that is safe, effective and just works - this is the review you need to read. Click the link below to check out our full review, and why we are recommending it to all our readers:

- See Our Full Review -