Gat Sport is dedicated to your success, which is something they’ve been helping bodybuilders achieve for 20-years now. They make highly diverse products that are stackable, transparent, and (mostly) clean to deliver the kind of potent performance you seek in the gym.
In this review, we’ll have a look at Gat Sport’s original Nitraflex pre-workout formula, designed to “magnify energy, alertness, strength, stamina, pumps, and free testosterone during workouts.”

About Nitraflex
Nitraflex is a potent pre-training formula that will crank up your energy, stamina, testosterone levels, and alertness so that the gym just seems like the right place to be. It does this using a combination of amino acids and plant compounds scientifically proven to boost your body’s nitric oxide (NO) and androgen levels.
With its explosive results, you’ll experience NO levels, and vascular muscles like you didn’t think possible, and with its proven muscle building ingredients, big, rock-hard muscles will only be a matter of putting in the work.
At least that’s what Gat Sport claims!
Nitraflex Benefits
High Citrulline: Arginine Ratio
Though arginine is a precursor to nitric oxide, supplementing with it stimulates arginase—an enzyme that breaks down arginine and reduces its supplies–to go to work.
But according to Gat Sport, adding high levels of citrulline to the mix may prevent this from happening so that you get a steadier supply of NO for vascular muscles, energy, and stamina.
CFB Helps Support Testosterone
While it may not be a dedicated testosterone boosting supplement, like Performance Lab T-Booster or Testo-Max, Nitraflex does include calcium fuctoborate within its formula. Calcium fructoborate is a naturally occurring compound of boron, fructose, and calcium. It can boost your total and free testosterone levels (the important kind) by up to 29%, and has the science to prove it, and do it safely and without the dangerous side effects of testosterone use.
Effective Dose Of Beta-Alanine
This performance-enhancing amino acid is well-represented in Gat Sport’s formula so that you get all its benefits, including more energy, increased time to exhaustion, and less muscle acidosis.
Cognitive Enhancers
You may want big muscles, though you’re probably not interested in being called a muscle-head. That’s just one of the many benefits Nitraflex has to offer, since it not only boosts your physical energy, but your mental energy too.
This means more intensity, alertness, and focus both in the gym, and more productivity in the office and classroom.
Nitraflex Ingredients
Nitraflex contains 7240 mg of a blend called Nitraflex Proprieceutical Blend. Below we will take a closer look at what is included in this blend.
Citrulline & Citrulline Malate
Citrulline is an amino acid that can detoxify the body, dilate blood vessels, and boost athletic performance.
As a vasodilator, it also helps lower your blood pressure while helping provide insane pumps.
L-arginine & L-arginine Malate
Another amino acid that benefits athletic performance is L-arginine, which is needed for your body to produce NO. This is important since NO relaxes blood vessels, monitors blood pressure, and can even help reverse erectile dysfunction.
Alpha-Ketoglutarate
Glutamine without nitrogen is called alpha-ketoglutarate, which your cells use to heal from wounds and grow muscle tissue. It also plays a role in releasing energy and boosting your metabolism so that you not only have the oomph in the gym for more intense workouts, you fuel them with fat.
Resveratrol
A potent antioxidant that comes from plant pigment, resveratrol helps lower blood pressure, improve brain health, and control blood sugar.
It also helps lower “bad” LDL cholesterol while boosting levels of “good” HDL cholesterol, and due to its anti-inflammatory properties, it may even help aching joints feel better.
Pterostilbene
It’s pronounced “tear-oh-STILL-bean,” and is similar to resveratrol, only better. That’s because it’s both highly bioavailable AND harder for your body to eliminate. This means while resveratrol works wonders, pterostilbene takes it a step further in reducing oxidative damage, lowering blood pressure, and keeping your joints healthy and pain-free.
Beta-Alanine
Beta-alanine is an amino acid that produces carnitine, an amino acid derivative that reduces lactic acid buildup in muscles. This enables you to work out harder, longer, and with more fat burn to energize you.
Caffeine
What would any pre-workout formula be without the cheap energy of caffeine? It boosts metabolism, helps you burn fat, and has mental benefits as well.
It also releases the energizing hormone epinephrine into your system so that you work out like a maniac.
DMAE
As a precursor to testosterone, DMAE boosts your workout performance along with helping your cognitive function, skin health, and energy levels. Naturally occurring in the human body and fatty fish, it also increases the production of acetylcholine, a neurotransmitter that’s key for cell signaling to control nerve and cognitive function.
N-Acetyl L-Tyrosine
Produced from the energizing amino acid phenylalanine, n-acetyl L-tyrosine helps your body produce hormones such as dopamine, epinephrine and norepinephrine, and thyroid hormones. This helps it regulate your metabolism, energy levels, and mood, as well as other functions connected with your body’s hormone production.
This includes helping burn more body fat while supporting muscle growth—assuming you’re putting in the work at the gym and eating right, that is.
L-Theanine
Not only is exercise performance important in the gym, so is focus and mood, which is where the amino acid l-theanine comes in.
Plus, it also improves sleep for speedier recovery and HGH production and helps control your blood pressure while regulating your body’s fight-or-flight hormones for a healthy stress response.
Rauwolfia Root Extract
No, Indian Snake Root—AKA rauwolfia–is NOT snake oil, since unlike snake oil, it works. This includes reducing blood pressure, reducing oxidative stress, and producing a calm, tranquil response to stress.
This also helps you mentally, especially since stress hormones are responsible for such things as brain fog, poor cognitive function, and a constant need to remember for whatever it is you’ve forgotten this time.
Calcium Fructoborate
Naturally occurring in plants, this combination of calcium, boron, and sugar acts as a potent antioxidant that may reduce joint pain along with other benefits.
These include possibly lowering blood lipids, increasing testosterone production, and boosting heart health.
Does Nitraflex Work?
Used as directed before workouts, NitraFlex will increase your serum NO levels, rev you and your focus up, and get you ready for intense training. It’s mostly made with natural ingredients—until you get to the coloring, flavoring, and other artificial crap they put in it.
But so long as you’re fine with a little FDA Blue Dye #1 and acesulfame potassium in your “healthy” workout formula, NitraFlex performs as claimed.
Who Is Nitraflex Best For?
If you’re a gym rat, bodybuilder, or any athlete looking for a pre-workout performance boost, Nitraflex will boost your NO and androgen levels so that you have better endurance, power, and performance.
This includes the ability to build lean, dense, vascular muscle mass, and pumps like the pros.
But “natural product” or not, this stuff comes with a tome of warnings, including:
- Not to be used by anyone under the age of 18
- Do not use if you are pregnant, nursing, or attempting to become pregnant (the product is otherwise fine for women, by the way)
- Do not use if you are currently unaware of your health status or if you have a medical condition including but not limited to heart, liver, kidney, or thyroid disease, psychiatric or epileptic disorders, high or low blood pressure, cardiac arrhythmia, recurrent headaches, enlarged prostate or glaucoma
- Do not use if you are taking prescription or non-prescription medication of any kind, including but not limited to MAO inhibitors, anti-depressants, aspirin or non-steroidal anti-inflammatory drugs
- Do not use if you are prone to overheating or dehydration
- Do not combine with other stimulating products (this includes your morning cup of coffee!)
- Discontinue at least 2 weeks prior to surgery or if you experience rapid heartbeat, dizziness, severe headache or shortness of breath
- KEEP OUT OF THE REACH OF CHILDREN!
The product also needs to be cycled 1-week off after every 8-weeks. Failing to do so can set you up for side effects that include shrunken nuts, a bad attitude, and acne.
Claims vs. Reality
As long as you cycle the product and don’t mind a little FD&C Blue Dye #1 or other artificial ingredients in your “natural” product, you’re good to go with Nitraflex and its ability to boost your NO and androgen levels.
But stick to the recommended dose, and if you experience side effects, lower it or discontinue completely.
Is Nitraflex Safe?
As long as you’re healthy, to begin with, and use the product as directed, including cycling off every 8-weeks, it’s mostly safe and free of side effects.
But not everyone is the same, and what is one person’s ideal dose may produce side effects such as gastric upset, skin irritation, insomnia, and convulsions in another. This goes along with the risks of not cycling, which include baldness, acne, shrunken man parts, and depression.
Plus, there’s that whole list of safety warnings, which, to reiterate, include:
- Not to be used by anyone under the age of 18
- Do not use if you are pregnant, nursing, or attempting to become pregnant (the product is otherwise fine for women, by the way)
- Do not use if you are currently unaware of your health status or if you have a medical condition including but not limited to heart, liver, kidney, or thyroid disease, psychiatric or epileptic disorders, high or low blood pressure, cardiac arrhythmia, recurrent headaches, enlarged prostate or glaucoma
- Do not use if you are taking prescription or non-prescription medication of any kind including but not limited to MAO inhibitors, anti-depressants, aspirin or non-steroidal anti-inflammatory drugs
- Do not use if you are prone to overheating or dehydration
- Do not combine with other stimulating products (this includes your morning cup of coffee!)
- Discontinue at least 2 weeks prior to surgery or if you experience rapid heartbeat, dizziness, severe headache or shortness of breath
- KEEP OUT OF THE REACH OF CHILDREN!
Other than that, this product works as intended and you can expect results when used properly.
Where To Buy Nitraflex
Nitraflex comes in your choice of 12-artificial flavors and is widely available through online and traditional retailers who specialize in bodybuilding supplements, including Gat Sport’s site, Amazon, Walmart, The Vitamin Shoppe, GNC, and many others.
The cost is a reasonable $29, and we also find it refreshing that rather than going through the typical nonsense of an astronomically priced product that the company discounts just for you, they simply offer it at a decent price to begin with. This means no committing to a 6-month supply just to get a volume discount or having to deal with auto-ship just to knock another 10% off—kudos for that, Gat Sports!