GAT Nitraflex Pre workout Review

GAT Nitraflex Review

Pre workouts can be a dime a dozen, so finding one that works for you may include trial and error. Luckily, there are pre workouts that have a strong reputation to back up their effectiveness. One of those pre workouts is GAT Nitraflex. But, Nitraflex isn’t alone anymore. Now, we have the Nitraflex series, which includes Nitraflex C+,  Nitraflex Burn, and Nitraflex Pump. 

In this post, we will be covering:

  • GAT Nitraflex 
  • The Other Versions
  • How They Compare
  • Which Is The Best For The Gym

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What is GAT Nitraflex?

As we mentioned, Nitraflex is a pre workout. But, it’s not just a pre workout, it also may boost testosterone. However, this boost won’t replace a natural testosterone booster supplement or compete with a pro hormone. So while it may benefit the gym, it’s unlikely to make a significant change in your testosterone levels. For this reason, both men and women can enjoy GAT Nitraflex.

Let’s dig a little deeper into the formula here:

Nitraflex contains a classic combination of ingredients, but features a proprietary blend. Meaning, we won’t be able to determine the amount of each ingredient within the blend. 



Niacin (Vitamin B3) is in a lot of products from pre workouts to fat burners a like. Why? Well, there are a ton of benefits from B-Vitamins and for pre workouts, it may even be beneficial for improving vasodilation and reducing blood pressure. (1,2)

Citrulline VS Citrulline Malate

You may have noticed that in GAT Nitraflex, there are two forms of citrulline in the formula. They both essentially do the same thing (aid in boosting vasodilation/pump), however, citrulline malate may be absorbed better than L-citrulline. (3)

This may be due to the addition of the malic acid (Malate). In addition to this, the malic acid may promote an increase in stamina and reduce pain inflammation. (4)

L-Arginine Malate VS L-Arginine Alpha-Ketoglutarate 

Like with citrulline, there are two forms of arginine. Arginine, like citrulline, is a Nitric Oxide booster, which is what helps increase blood flow to our muscles and improves our pumps. (5)

Compared to L-arginine malate, AAKG may be absorbed better. So, it may be better at promoting blood flow as well, but there isn’t enough research comparing these two ingredients to be definitive. 


High Citrulline: Arginine Ratio

Nitraflex contains a high citrulline to arginine ratio. We all know arginine is a vasodilator and helps with with blood flow, aka”the pump”. The disadvantage to high arginine containing formulas is the fact that overtime the body responds to high arginine levels by increasing production of the enzyme arginase, which breaks down arginine. Citrulline is an amino acid that is closely related to arginine and is vasodilator as well. However, it is unaffected by the enzyme Arginase. In other words, you will not be developing a tolerance to Nitraflex as quickly as you did with other pre workouts.

Beta Alanine

Beta Alanine is one of the most popular ingredients in a pre workout. If you haven’t heard of beta alanine, chances are you probably felt it. Beta alanine is associated with the tingling feeling known as paraesthesia. For many pre workout users, this feeling is what indicates–its time to workout out. (6)

But, what does beta alanine actually do? It acts as a buffer for lactic acid build up, which accumulates while we workout. Lactic acid is plagued as the burning feeling we get during our reps. However, lactic acid isn’t as bad as it’s reputation. It actually may aid in muscle growth and be used for cellular energy. (7)

So the addition of beta alanine aids in buffering away this feeling; allowing you to continue working out. For this reason, beta alanine is considered an endurance booster. (8,9)


N-Acetyl-L-Tyrosine is a common ingredient found in pre workouts. It’s considered a cognitive-enhancer, which means it may improve attention, focus, memory, and even mood. And it may do so even better in individuals who are sensitive to stressors (10).


Theanine like Tyrosine is an anti-stress amino acid, which is often acknowledged for its “relaxation without sedation” feeling. However, theanine may also have a synergistic effect when combined with caffeine. The research on this effects suggests that this combo may promote heightened focus, awareness, and, of course, energy (11).


Resveratrol is a plant compound that acts like an antioxidant in the body (12). There are a bunch of potential benefits from Resverstrol, such as easing joint pain, reducing blood pressure, and being neuroprotective (13,14,15).


Pterostilbene is another antioxidant, which is similar in structure to resveratrol (16). Meaning, they may have some shared benefits. But, some researchers suggests that Pterostilbene may be better absorbed by the body†.



Caffeine is a central nervous system stimulant.When it is consumed and reaches your brain, you’ll notice the effects like energy and alertness. It is also causes the brain’s blood vessels to constrict. This is due to it blocking adenosine’s ability to open them up. Which is why it is sometimes referred to as a vaso-constrictor, like other stimulants. (17)

DMAE Bitartrate

DMAE Bitartrate is another cognitive booster in GAT Nitraflex. That means it can aid in increasing focus, attention, and some mood boosting effects (18).

Rauwolfia Canescenes

Raulwolfia Canescenes shares similarities to yohimbe, so it’s going to have similar benefits†. In addition to that, Raulwolfia Canescenes is used to treat hypertension (19).

Calcium Fructoborate (CFB)

Calcium fructoborate is a form of boron that could aid in naturally boosting testosterone (20).

Creatine Free:

Depending on your goals, this may be pro or con. Creatine definitely has it’s place in your supplement stack. However, it does contribute to water retention and if you’re trying to achieve that hard-leaned-out look, creatine may temporarily leave you looking a little “softer” because of the extra water you are holding. If you are a competitive bodybuilder, this can make or break your competition.

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Different Versions

As we mentioned, GAT Nitraflex comes in a couple different versions, which is perfect for picking the right pre workout for your goals.

GAT Nitraflex C+

Nitraflex C+

Nitraflex C+ is the most similar to the OG GAT Nitraflex. The main difference is the addition of Creatine Monohydrate, but there are a 2 other changes to this formula.

Ingredients that are shared with Nitraflex include:

  • Citrulline
  • Citrulline Malate
  • L-Arginine Malate
  • L-Arginine Alpha-Ketoglutarate (AAKG)
  • Beta Alanine
  • N-Acetyl-L-Tyrosine
  • Theanine
  • Resveratrol
  • Pterostilbene
  • Caffeine
  • DMAE Bitartrate
  • Calcium Fructoborate (CFB)

The ingredients that are different include:

  • Creatine Monohydrate
  • Yohimbe Bark Extract 
  • Organic Evaporated Cane Sugar Powder

Creatine monohydrate is a combination of 3 amino acids that are naturally occurring in the body (L-arginine, Glycine, L-methionine). For the noncompetitive bodybuilder, everyday gym-goer, etc., creatine can be a really helpful tool in your stack. What creatine does is help with ATP production, which translates to more energy to push through workouts. Creatine also helps shuttle water to cells. By hydrating cells, we increase muscle synthesis. (21)

Yohimbe Bark Extract:

As we mentioned earlier, Raulwolfia Canescenes shares a lot of similarities to yohimbe. This includes the energy and thermogenic properties that yohimbe is recognized for. So this ingredient isn’t that big of a change in the formula. (22)

Organic Evaporated Sugar Powder:

This version of Nitraflex also contain organic evaporated sugar powder which will add to the flavor of these flavors. †

GAT Nitraflex burn

Nitraflex Burn

Nitraflex also shares a lot of the same ingredients as the OG Nitraflex, but with 4 additional ingredients to aid in weight loss.

Ingredients that are shared include:

  • Citrulline
  • Citrulline Malate
  • L-Arginine Malate
  • L-Arginine Alpha-Ketoglutarate (AAKG)
  • Beta Alanine
  • N-Acetyl-L-Tyrosine
  • Resveratrol
  • Pterostilbene
  • Caffeine
  • DMAE Bitartrate
  • Rauvolfia canescenes
  • Theanine

The different ingredients include:

  • L-Carnitine 
  • Green Tea Leaf Extract
  • Cassia Bark Powder
  • Cayenne Pepper

L-Carnitine helps the body use fatty acids for energy, rather than storing it (23).

Green Tea Leaf Extract

There is a ton of research on Green Tea’s effect on weight loss. (24)

Some of the more recognized benefits include:

  • Improving your body’s efficiency at burning calories
  • Improve exercise performance
  • Reduce visceral (belly fat) and inflammation
Cassia Bark Powder

Cassia Bark may prevent the stomach and intestines from absorbing dietary fat. This causes dietary fat to be excreted, which might promote weight loss in some people†. But more research is needed for this ingredient.

Cayenne Pepper

Cayenne pepper is another spice that is commonly used in fat burners to increase thermogenesis, appetite suppression, and speed up metabolism (25).

GAT Nitraflex pump

Nitraflex Pump

Nitraflex Pump is the most different out of all the versions. The most significant difference being that it’s stimulant free.

Ingredients that are shared include:

  • Citrulline
  • Beta Alanine
  • Calcium Fructoborate

The different ingredients include:

  • HydroMax Glycerol
  • Taurine
  • Agmatine Sulfate
  • Masson Pine Bark Extract
  • L-Norvaline
HydroMax Glycerol

Glycerol is recognized for aiding in pumps, giving your muscles a more full look. But aesthetics aside, glycerol can also aid in performance. Studies suggest that supplementing with glycerol can aid in aerobic and anaerobic exercise (25).

However, this ingredient does come with a negative effect, it tends to increase the clumpiness of  powdered supplements. While the clumping is generally easy to break apart and won’t affect the performance of the product, it can be annoying.


Taurine is effective for promoting endurance, increasing alertness and enhancing recovery (26).

Agmatine Sulfate

Agmatine is a metabolite of to Arginine. Current research suggests it may promote nitric oxide (NO) synthesis better than arginine, as well as properly regulate cellular energy. This makes agmatine sulfate a popular pump-inducing ingredient, but further research is needed on this ingredient (27,28).

Masson Pine Bark Extract

Research suggests Pine Extract may be effective at reducing effects related to oxidative stress. This includes muscle soreness and damage (29).


This is a form of the BCAA amino acids L-Valine. L-Norvaline improves circulation and nitric oxide levels, which adds to the pump you feel in the gym (30).

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How Do They Compare

When you review all the ingredients, it becomes clear “who” should take each version.

For example, the OG GAT Nitraflex has:

  • Stimulants
  • Cognitive Boosters
  • Pump/Endurance Enhancers

This is the basic sum of what you want from a pre workout when you’re an everyday gym-goer with a moderate to heavy tolerances to stimulants. Keep in mind that every scoop of Nitraflex contains 325mg of caffeine which is just under 4 cups of coffee.

But, when you checkout some of the formulas you see a different focus. In Nitraflex C+, you have mostly the same ingredients as the OG Nitraflex, but with creatine. So this may be better for gym-goers that focus on high-volume training.

Whereas Nitraflex Burn shares a bunch of similar ingredients as well, but includes fat burning ingredients. Making this version ideal for gym-goers looking to lean-out and sweat more. If your workouts consist of a lot cardio, you may want to opt in for some intra-workout BCAAs to aid in maintaining hydration.

Finally, Nitraflex Pump is ideal for late-night gym-goers and stimulant sensitive athletes. This version of Nitraflex is focuses around enhancing blood flow and endurance, so if you’re looking to add to a different pre workout and create a stack–you can with this version.

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Which Is The Best For The Gym

When it comes to the gym, its going to come down to your preference and goals. As we mentioned before, stimulants are generally vaso-constrictors. Meaning they can reduce blood flow and increase blood pressure. And while we love the energy and focus we get from stimulants, they aren’t the most beneficial for muscle growth. That’s where Nitraflex Pump may have the advantage.

Increased Endurance= More Reps, Sets, or Weight

By taking a pre workout with a greater ratio of ingredients that promote blood flow and endurance over stimulant, you’re likely to feel the boost an endurance more.

Wrapping It All Up

This concludes our review and breakdown of GAT Nitraflex and the rest of it’s series! Thank you for reading and if there’s another product you’d like us to review, an ingredient that you think needs further elaboration, or another blog idea you want to see in the future– send us an email here!


The intention of the information provided is for reference only and we are in no way providing medical advice or instruction. The information provided in this post is based on anecdotal information and available studies/reviews. While it is our goal to maintain and display accurate information, we can’t guarantee it represents the latest formulation of the product or information. Therefore, if you have any concerns, please visit the manufacturer’s website. Also, the information above is not a representation of our views at Same Day Supplements. Rather, these are the views and information provided by manufacturers and users. Also, the Food and Drug Administration has not evaluated these statements. Finally, the intention of these products is not to diagnose, treat, cure or prevent any disease or illness.