🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 20% of ingredients have research evidence
B Label Compliance Grade

Product Label

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Label Data

5.2 Gram(s) Serving Size
30 Servings
Other Combinations Product Type
20% Evidence Coverage

Supplement Facts — Evidence Check

Calories
5 Calorie(s)
Total Carbohydrates
1 Gram(s)
25 mg (156% DV)
✅ 1.8× RDA — within safe limits 📚 193 studies (Tier A: 5, B: 63)
RDA 14mg This product: 25mg UL 35mg
Sodium
85 mg (4% DV)
NitraFlex Proprieceutical Blend
6521 mg

Other Ingredients

Malic Acid Natural & Artificial Flavors Silica Calcium Silicate Sodium Bicarbonate Citric Acid Sucralose Erythritol Oligosaccharides Natural Flavors

Label Claims — Verification

All Other
Structure/Function
All Other (97% of products) Structure/Function (86% of products) Nutrient (36% of products)

Target Groups

Adult (18 - 50 Years) Women (not pregnant or lactating)

Product Information

📋 Directions for Use

1-scoop serving: Nitraflex is so potent, only 1 scoop (1 serving) is necessary.

After 8 weeks of use, take 1 week off before resuming use.

Recommended dosage Begin by assessing your tolerance with half a serving of nitraflex mixed with 5oz of cold water. Consume within 30 minutes before working out. Depending on tolerance, mix 1 serving (1 scoop) of nitraflex with 8-10oz of cold water and consume within 30 minutes before working out.

Special time of use Before powerlifting meets Any type of weight training Anytime extreme energy/focus is needed.

⚠️ Warnings & Precautions

Do not exceed recommended daily dosage

Do not exceed 1 scoop ina single 24-hour period. Do not take Nitraflex within 5 hours of bedtime.

Do not use if neck seal is broken or missing.

Warning: Do not take more than 1 scoop per serving

Contains 325mg Caffeine Anhydrous

Warning: Not for use by individuals under the age of 18.

Do not use if pregnant or nursing. Do not use if you have a medical condition or are taking any prescription medication. Do not use this product if you are using a monoamine oxidase inhibitor (MAOI) or any other dietary supplement, prescription drug or any over-the-counter drug containing ephedrine, pseudoephedrine, phenylpropanolamine or other stimulant.

If you experience any other adverse reaction discontinue use immediately and consult a physician. Individuals who consume caffeine with this product who are sensitive to caffeine may experience serious adverse health effects. Do not exceed recommended serving. Do not consume with alcohol or other stimulants. Do not use if you are prone to overheating or dehydration.

Discontinue at least 2 weeks prior to surgery.

Keep out of reach of children.

Do not take within 5 hours of bedtime. (Do not take more than 1 scoop within 24 hours)

Warning: Consuming this product can expose you to chemicals including lead which is known to the State of California to cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov

🧪 Formulation Notes

Nuttraceutical facts: Now with nitrosigine for even greater pumps! For nearly a decade, Nitraflex has been the name you trust when it comes to pre-workout formulas. And now, Nitraflex ups the ante by introducing Nitrosigine to the mix, and adding even more pure Citrulline to the formula.

This 1-2 punch greatly increases pumps beyond expectations. The volume has been turned up on the energy, focus and flavor a well.

Lastly, there's no more artificial dyes in the formulas.

Physiological basis: "Reactive hyperemia" describes the increase in muscle blood flow that occurs during high-intensity resistance exercise and products the "pump" associated with increases in the muscle size. The Nitraflex pre-training formula contains ingredients that in animal, in vitro and clinical studies suggest possess properties that may help advanced athletes maximize energy, intensity, vascularity and reactive hyperemia (pumps) during their workouts, and provide long-term support of testosterone and Nitric Oxide level in the healthy range when used as directed. Scientific references: 1. Romero MJ et al. Cardiovasc Drug Rev 2006; 24(3-4): 275. 2. Sureda A et al. Free Rad Res 2009; 43(9): 828. 3. Komorowski J, Perez Ojalvo S, Sylla S, Veledar E. Arginase inhibition by inositol-stabilized arginine silicate (ASI; Nitrosigine); a novel mechanism by which ASI enhances arginine bioavailability. Current Developments in Nutrition. 2018;2(11):P08-054. 4. Rood-Ojalvo S, Sandler D, Veledar E, Komorowsko J. The benefits of inositol-stabilized arginine silicate as a workout ingredient. JISSN. 2015;12(Suppl 1):P14. 5. Komorowski J, Perez Ojalvo S. A pharmacokinetic evaluation of the duration of effect of inositol-stabilized arginine silicate and arginine hydrochloride in healthy adult males. The FASEB Journal. 2016;30(Suppl 1):690.17. 6. Kalman D, Harvey PD, Perez Ojalvo S, Komorowski J. Randomized prospective double-blind studies to evaluated the cognitive effect of inositol-stabilized arginine silicate in healthy physically active adults. Nutrients. 2016;8(11):736. 7. Evans M, Zakaria N, Marzuk M, Perez Ojalvo S, Sylla S, Komorowski J. An evaluation of the effects of inositol-stabilized arginine silicate (ASI; Nitrosigine) in preventing the decline in cognitive function caused by strenuous exercise. JISSN. 2018;15(Suppl 1):A50. 8. J Trace Elem Med Biol. 2011 Jan;25(1):54-8. doi: 10.1016/j.jtemb.2010.10.001. Epub 2010 Dec 3.

Unique properties of some of the key compounds in nitraflex: Powered by Nitrosigine: This new formula boasts nitrosigine as it only source of arginine. Nitrosigine has been shown to inhibit the enzyme responsible for breaking down arginine, making it superior choice of arginine supplementation and a perfect synergistic partner to L-citrulline. Nitrosigine has scientifically validated that benefits last up to 6 hours after dosing. In addition to vasodilation (pump) and overall performance-enhancing benefits, Nitrosigine is clinically shown to increase mental focus, making it a truly well-rounded and multi-faceted addition to any effective pre-workout formula.

200mg of boron citrate in every dose of nitraflex: This trace mineral has been shown to lower estrogen, while raising free testosterone by 28.3% in as little as 7 days!

Cognitive enhancers: Nitraflex contains unique ratios of scientifically validated compounds that help you remain alert, intense and focused while you're flying from set to set with veins fully dilated and muscles and muscles to the extreme.

Feel your power surging within minutes from 1 scoop Increase free testosterone by up to 29%

Note: One serving contains 325mg caffeine, 1000mg of Nitrosigine, and a clinically researched dose of boron Scientific references: 1. Romero MJ et al. Cardiovasc Drug Rev 2006; 24(3-4): 275. 2. Sureda A et al. Free Rad Res 2009; 43(9): 828. 3. Komorowski J, Perez Ojalvo S, Sylla S, Veledar E. Arginase inhibition by inositol-stabilized arginine silicate (ASI; Nitrosigine); a novel mechanism by which ASI enhances arginine bioavailability. Current Developments in Nutrition. 2018;2(11):P08-054. 4. Rood-Ojalvo S, Sandler D, Veledar E, Komorowsko J. The benefits of inositol-stabilized arginine silicate as a workout ingredient. JISSN. 2015;12(Suppl 1):P14. 5. Komorowski J, Perez Ojalvo S. A pharmacokinetic evaluation of the duration of effect of inositol-stabilized arginine silicate and arginine hydrochloride in healthy adult males. The FASEB Journal. 2016;30(Suppl 1):690.17. 6. Kalman D, Harvey PD, Perez Ojalvo S, Komorowski J. Randomized prospective double-blind studies to evaluated the cognitive effect of inositol-stabilized arginine silicate in healthy physically active adults. Nutrients. 2016;8(11):736. 7. Evans M, Zakaria N, Marzuk M, Perez Ojalvo S, Sylla S, Komorowski J. An evaluation of the effects of inositol-stabilized arginine silicate (ASI; Nitrosigine) in preventing the decline in cognitive function caused by strenuous exercise. JISSN. 2018;15(Suppl 1):A50. 8. J Trace Elem Med Biol. 2011 Jan;25(1):54-8. doi: 10.1016/j.jtemb.2010.10.001. Epub 2010 Dec 3.

Scientifically advanced

Creatine-free

Hypermia & testosterone enhancing powder Energy Focus Pump Strength 30 Pre-workout servings increased performance

Fruit Punch Naturally and artificially flavored

Now with: Nirosigine Bonded arginine silicate 325mg caffeine Clinically tested boron

3x strength Insane pumps Seething intensity

Vasodilation Testosterone Reactive Hypermia (muscle pumps) Strength

Additional Information

All in all, this is the strongest and best-tasting Nitriflex yet!

Store in a cool dry place.

Comments or questions? Toll-Free 1-888-811-4286 or 1-203-880-5800

Scan for authenticity Verify with your phone's QR app! Follow site directions Download latest QR reader app to your smart phone.

Made in the United States with Domestic and Foreign Ingredients

Contents are measured/sealed by weight, not volume

"I stand firmly behind our unconditional 30-day money-back guarantee on all our products. Stay Strong!" Charles Moser President & CEO

Product Details

UPC / SKU 8 59613 64890 7
DSLD Entry Date 2025-02-23
Product Type Other Combinations
Form Powder
Brand GAT Sport
DSLD ID 321513
Data Updated 2026-04-11

Research Evidence

241 Research Sources
55 Avg Quality Score
113 Meta Analysis
75 Systematic Review
32 Rct
11 Clinical Trial
3 Other
3 Regulatory Source
1 Cochrane Review
1 Narrative Review
1 Openfda Safety
A Niacin for primary and secondary prevention of cardiovascular events
Meta Analysis The Cochrane database of systematic reviews 2017
A Use of high potency statins and rates of admission for acute kidney injury: multicenter, retrospective observational analysis of administrative databases
Meta Analysis BMJ (Clinical research ed.) 2013
A Effect on cardiovascular risk of high density lipoprotein targeted drug treatments niacin, fibrates, and CETP inhibitors: meta-analysis of randomised controlled trials including 117,411 patients
Meta Analysis BMJ (Clinical research ed.) 2014
A A terminal metabolite of niacin promotes vascular inflammation and contributes to cardiovascular disease risk
Meta Analysis Nature medicine 2024
A Meta-analysis and imputation refines the association of 15q25 with smoking quantity
Meta Analysis Nature genetics 2010
A Genome-wide meta-analyses identify multiple loci associated with smoking behavior
Meta Analysis Nature genetics 2010
A Antidepressants for smoking cessation
Meta Analysis The Cochrane database of systematic reviews 2014
A Topical azelaic acid, salicylic acid, nicotinamide, sulphur, zinc and fruit acid (alpha-hydroxy acid) for acne
Meta Analysis The Cochrane database of systematic reviews 2020
B Assessment of the Role of Niacin in Managing Cardiovascular Disease Outcomes: A Systematic Review and Meta-analysis
Meta Analysis JAMA network open 2019
B Association Between Lowering LDL-C and Cardiovascular Risk Reduction Among Different Therapeutic Interventions: A Systematic Review and Meta-analysis
Meta Analysis JAMA 2016
View all evidence for Niacin →

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