4 Gauge vs GAT Nitraflex Pre Workout [One Is Among The Best]

4 Gauge vs GAT Nitraflex Pre Workout

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4 Gauge vs GAT Nitraflex Pre Workout

Time to  see which product from our 4 Gauge vs GAT Nitraflex Pre Workout review is going to give us a pre-workout worth buying.

Both products come from big companies, but which has the best reputation and is one safer than the other?

There are so many tangibles that go into a supplement comparison but for a pre workout, we are looking for one that can give us the following:

  • Increased energy
  • Enhanced focus
  • Greater muscle pumps
  • Big gains!

Anything less than this won’t be good enough so we are hoping for a competitive battle.

Let’s start by getting to know them a little better.

4 Gauge vs GAT Nitraflex Pre Workout: Who Makes these Products

Roar Ambition4 Gauge Pre Workout Supplement

Here we have the UK based team behind 4 Gauge.

They do everything by the book, making their products to the approval of both the GMP and FDA.

We like that they have a generous money back guarantee as it means purchasing is risk-free. Also, they review and amend their ingredient profiles regularly. This means the customer is always getting the best possible version.

With so many 4 Gauge before and after profiles being posted online, it seems that many people are pleased with what they see.

If you’re into endorsements then theirs are pretty impressive. UFC fighter Diego Sanchez puts his name to their fat burner Instant Knockout. Also, former Mr. Universe Robby Robinson puts his name to their T booster TestoFuel.

Roar Ambition ship directly from the UK and USA.

GAT SportsGAT Nitraflex Pre Workout

Here we have the US-based brand with over 20 years of industry experience.

With this much knowledge, you would expect a great product.

They have a lot of outlets across the world and have a wide range of products of course!

GAT Sports have a natural line which is good to see. This includes the likes of Plant Protein and Sports Greens. They even have a diuretic available!

Their endorsements are also very credible. Mr. Olympia classic physique 3rd place contestant Sadik Hadzovic is an ambassador and there are also Bikini Pros on there as well.

There is a page dedicated to product demo events on their site. But as far as we could see, there wasn’t anything lined up. One of their claims is that this works as a pre-workout but also boosts T.

4 Gauge vs GAT Nitraflex Pre Workout Ingredients

This is where we can really set these two apart.

The early signs aren’t great for GAT Nitraflex Pre Workout though. They use proprietary blends which means we don’t get to see their dosages.

It also means we cannot see if their ingredients are effective or not. Still, there is a lot that we can tell from the ingredients alone.

Mutual Ingredients


A very effective start from both products.

One of the ingredients you expect to see, it improves blood flow, great news for your muscles and your gains.

It increases nitric oxide levels, excellent for huge pumps. Derived from watermelons it converts into Arginine which helps with Creatine synthesis.

This is more important for GAT Nitraflex as it doesn’t include Creatine. 4 Gauge have gone for a huge, safe, and very effective 6,000 mg.

Since the proprietary blend GAT Nitraflex have included it in totals just over 7,000 mg and includes various ingredients, it is not going to be dosed as well.


A clever ingredient to include.

Because most pre-workouts include stimulants, you will find nutrients like this one.

L-theanine helps the user to stay in control whilst not affecting the good traits of using stimulants like Caffeine. Derived from Green Tea leaves, it keeps you calm and has even been found to make Caffeine’s positive effects last longer.

The 200 mg in 4 Gauge is a good amount. Their Caffeine content is sensible so they don’t need to go overboard.

The proprietary blend in GAT Nitraflex stops us from knowing how much there is once again.


Almost every type of supplement going uses Caffeine.

It has so many benefits but the energy increase it can provide is one of the more reliable. By helping you to get the most out of your workout, it is a good ingredient to include.

With other benefits such as enhanced focus and alertness, it is a good all-rounder. 4 Gauge have included Caffeine Anhydrous. This is a powdered form that is easily absorbed and works fast.

This is where you need the dosage. The potential side effects from too much Caffeine can lead to jitters, headaches, insomnia and a lot more.

4 Gauge give us a very sensible 150 mg. This is a safe amount that will really work as well. GAT Nitraflex Pre Workout have put it in their proprietary blend so we have no idea if it dangerous or not.

Individual Ingredients

4 Gauge

Creatine Monohydrate

An impressive start for 4 Gauge.

Examine.com says that Creatine is often used by athletes to increase power output and lean mass.

It has been proven to work and is a safe ingredient. In terms of pre-workout supplements, it is very much a mainstay. It benefits performance, and especially the muscles. It provides more strength and ensures they still have energy after training.

Creatine actually aids recovery and makes sure you have a better chance of achieving even greater gains.

There is one study that shows how it can benefit the body at any time. This discusses supplementing Creatine during arm flexor strength training led to greater increases in arm flexor muscle strength, upper arm muscle area, and fat-free mass than strength training alone.

The dosage in 4 Gauge is an effective 1,000 mg. Clearly, they’re not being stingy on the dosages so far.

Acetyl L-Carnitine

An ingredient that works in multiple ways.

It is good for burning fat as well as increasing energy levels. Acetyl L-Carnitine is an ingredient that helps the consumer to train at peak levels for longer periods.

The 500 mg dosage from 4 Gauge is a great one.

Red Beet

A useful inclusion and one that will ensure blood flow is enhanced.

Red Beet is another excellent ingredient, it will have your body increasing plasma nitrate levels. Because of this, you will have more stamina.

Not done yet, the added blood flow means your muscle pumps will be enhanced. Of course, the result of all this is more gains.

The 300 mg from 4 Gauge is another optimal dosage.

Coconut Water Powder

A good pre-workout will get you working harder, this, of course, means you need more hydration.

Coconut Water is a great ingredient for this very reason. It is full of electrolytes and at 300 mg, it is another good dosage.

Rhodiola Rosea

Here we have a Scandinavian herb which is better known for keeping spirits up. It has also been found to keep your mind sharp. By giving the consumer an added focus, it is another useful ingredient.

The gym is full of people on their phones, here we have the antidote to this problem.

At 100 mg, it is a good amount.

GAT Nitraflex Pre Workout


A decent ingredient that is known as Vitamin B3.

Like many B-Vitamins, it helps with energy metabolism. B3 gets your body using carbs for energy, burning them off in the process.

The problem is that it isn’t great when the body takes in excess amounts, it just passes through your urine and Examine.com says that for B3 to be effective you need around a gram of it.

The 25 mg here is not enough then.

L-Arginine Malate

This amino acid is a more likely inclusion in a T booster.

This product does say it will also increase testosterone so we can see why they have gone for it.

There are better ingredients for increasing blood flow though, and it isn’t easily absorbed by the body either.

Without the dosage, we have no idea how close it can be to being useful.

L-Arginine Alpha Ketoglutarate

One study commented that this version of L-Arginine failed to improve muscular performance in resistance trained and untrained men.

An ineffective ingredient and for some reason, it is touted as being able to aid muscle performance. It appears to be useless and taking up more room here. Once again, we’re not sure how much.


A strange ingredient because of some of the benefits that some people believe it has. This includes extending lifespan.

Examine.com says that this is false and does not appear to do so in mammals. Resveratrol does appear to be effective at protecting the heart but does not add years to your life.

Found in wine, it is something that might sound familiar. But when it comes to a pre-workout ingredient, it doesn’t appear to have any real use.

There are certainly far better options out there.


Not the most impressive ingredient once again.

Derived from blueberries, it has links to reducing blood pressure. Basically, this means more filler and not an ingredient that is going to help with what we are after at all.

This isn’t the first bit of filler either, hopefully, there won’t be any more space wasters.


This amino acid might be natural, but it is still one we don’t like to see.

Firstly, WebMD say that it is a nonessential amino acid that is produced by the body. The potential side effects are what put us off though.

Sure, they are not the worst and they do pass before too long but it is thought to cause paresthesia. This is a tingling sensation on the skin, but something you don’t want to be experiencing in the gym.

Without a lot of evidence backing up its benefits, it is even less impressive. Beta-Alanine is thought to be able to fight fatigue and produce Carnosine. This would be good if it was true as it is what helps your muscles to stay at their peak for longer.

Without the dosage, we can’t say how likely it is that you will experience the tingling sensation linked with Beta-Alanine.

DMAE Bitartrate

Linked with cognitive benefits, it is the negatives that are a real concern.

DMAE is actually banned in many countries including Canada and Australia. This is because of the serious side effects that include high blood pressure, drowsiness, itching, insomnia, headaches, and depression.

It has also been linked to causing birth defects so it is just an ingredient to avoid.

The proprietary blend makes this so much worse. We have no idea how much there is which makes it an even scarier ingredient.


A return to the better ingredients.

Like Theanine it helps the body to remain calm when there are stimulants present.

By working against any potential negative effects, it means the likes of Caffeine can do what they do best.

L-Tyrosine is also good for promoting focus and reduce stress.

No dosage = no idea if it can work.


What makes this a bad ingredient is the fact that it works in a similar way to Yohimbine.

Examine.com say that there isn’t a lot known about its potency. This is another worrying fact.

With more research, we might be able to think otherwise, but not at this time.

Calcium Fructopyranose Borate (CFB)

Much like the previous ingredient, without much proof behind it, it’s hard to say it is a good ingredient.

CFB has links to reducing inflammation but we want more studies to support this before we can really vouch for it.

It is part of their T enhancing complex but we can’t find any useful information to suggest it will help raise T significantly.

4 Gauge vs GAT Nitraflex Pre Workout Side Effects

The easy place to start is with 4 Gauge.

Their mix of natural, safe and effective ingredients make it a well tolerated but also beneficial product.

GAT Nitraflex Pre Workout is another story.

Starting with the proprietary blend, it means we have no idea how high some of the potentially dangerous ingredients are dosed.

Caffeine, for example, can cause jitters, headaches, insomnia and a lot more if dosed too high.

Then there is Beta-Alanine which can cause paresthesia, a tingling sensation in the skin.

DMAE is the most worrying though. The potential side effects include birth defects, high blood pressure, drowsiness, itching, insomnia, headaches, and depression.

4 Gauge vs GAT Nitraflex Pre Workout Pros and Cons

4 Gauge Pros

  • 100% natural ingredients
  • Increased energy levels
  • Enhanced performance when in the gym
  • No side effects
  • Zero artificial sweeteners
  • Low in calories
  • Great taste
  • Made in the USA
  • No energy crash

Optimum Nutrition Gold Standard Pre Workout Pros

  • Some useful ingredients

4 Gauge Cons

  • No choice when it comes to flavors
  • Only available from the manufacturer

Optimum Nutrition Gold Standard Pre Workout Cons

  • Proprietary blend
  • Some ineffective ingredients
  • Potential side effects

4 Gauge vs GAT Nitraflex Pre Workout Conclusion

Winner: 4 Gauge

4 Gauge Review - best pre-workout - get 1 free bottle

Read our full 4 Gauge Review

Buy 4 Gauge from www.4gauge.com

(Clean Lean Machine Tip: Buy 3 bottles and get a 4th bottle FREE whilst the offer is still available!)

Whilst the competition turned out to be a disappointment, 4 Gauge is a tough competitor for anyone to beat.

With a great combination of excellent ingredients and optimal dosages, it has something to offer everyone.

In terms of top pre-workouts, you will find it hard to get your hands on a better supplement.

Buy 4 Gauge from www.4gauge.com

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