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GAT Sport
Nitraflex Advanced
High stimulant content · Read safety guidance
Our analysis — editorial take, not from the label
A split label. The front of the tub prints four numbers — 325 mg caffeine, 1,000 mg Nitrosigine, 1,500 mg beta-alanine, 200 mg boron citrate — while the Supplement Facts panel still folds everything else into a 3,700 mg pump blend and a 2,621 mg energy blend, so the L-citrulline, tyrosine, theanine and Rauwolfia amounts are anyone's guess.
- Caffeine
- 325 mg
- Citrulline
- —
- Beta-alanine
- 1.5 g
- Servings
- 30
Price tier: Mid-range · relative cost per full serving across this database
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Six flavors (Blue Raspberry, Fruit Punch, Grape, Green Apple, Watermelon, Black Cherry); sweetened with sucralose, acesulfame potassium and a natural blend of erythritol and fructooligosaccharides, with no artificial colors.
Label verified: September 2026 · View label source
Label data
Per full serving · 30 servings per container · from the manufacturer's panel
| Caffeine | 325 mg |
|---|---|
| Nitrosigine | 1,000 mg |
| Beta-Alanine | 1.5 g |
| Boron Citrate | 200 mg |
| Proprietary blend | Yes |
Primary label source: GAT Sport — official product page (Nitraflex Advanced) · verified September 2026
Cautions
- Two proprietary blends totaling 6,321 mg — on the Supplement Facts panel only caffeine (325 mg) and boron citrate (200 mg) carry disclosed doses
- Contains Rauwolfia vomitoria root extract, an added stimulant, at an undisclosed amount inside the energy blend
- The label's own limits: start at half a scoop, no more than one scoop in 24 hours, none within 5 hours of bedtime, and a week off after eight weeks
Formulated for healthy adults — not intended for anyone under 18. Performance studies use roughly 3–6 mg of caffeine per kg of body weight, which puts 325 mg at the studied amount for a 54–108 kg adult. Full health & safety notes
Product details
Where this label sits
GAT Sport Nitraflex Advanced sits in the high stim tier of the Scoop Sense pre-workout database, which spans 0–400 mg of caffeine per serving. The label uses at least one proprietary blend, so a blend total stands in place of the individual amounts inside it. It runs 30 servings per container at the full labeled serving. Everything on this page comes from the manufacturer's supplement facts panel as of September 2026 — never from the marketing page.
Key ingredients & studied doses
- Caffeine Anhydrous · 325 mg. Disclosed in the panel's footnote rather than inside the blend it belongs to; a high dose for a single 9.5 g scoop, and the label caps you at one scoop per 24 hours.
- Nitrosigine · 1,000 mg. The figure printed on the front of the tub, not on the Supplement Facts panel; Nitrosigine research generally uses 1,500 mg/day.
- Beta-Alanine · 1.5 g. Also a front-panel figure. Under half the 3.2 g/day used in most beta-alanine research.
- Boron Citrate · 200 mg. The only active besides caffeine that the Supplement Facts panel breaks out on its own line.
Flavors & sweetener
Six flavors (Blue Raspberry, Fruit Punch, Grape, Green Apple, Watermelon, Black Cherry); sweetened with sucralose, acesulfame potassium and a natural blend of erythritol and fructooligosaccharides, with no artificial colors.
Who it's best for
Users with an established caffeine tolerance. Skip it if you want every individual dose disclosed on the label. Derived from the label figures above — not medical advice.
How we log this label
Every entry is built the same way: we read the current supplement facts panel, log each disclosed dose, compare it against the amounts used in published research, flag proprietary blends, and state the cautions plainly. The full methodology explains each step.
This label against the research
How we evaluate labelsEach bar shows the amount commonly used in published human research, and where this label's dose falls against it. Research amounts are context, not a recommendation — they are not doses, and nothing here is medical advice. The bars compare what the label states; we do not laboratory-test the product to confirm it.
-
Caffeine325 mg
At or above the studied amount0studied range 200 mg–400 mg450 mg
Performance studies most often use 3–6 mg per kg of body weight, which works out to roughly 200–400 mg for most adults. The FDA cites 400 mg a day as an amount not generally associated with negative effects in healthy adults.
Source: Guest et al., Journal of the International Society of Sports Nutrition 2021 — “Caffeine has consistently been shown to improve exercise performance when consumed in doses of 3–6 mg/kg body mass.”
-
Nitrosigine1 g
67% of the low end of the studied range0studied range 1.5 g2 g
The manufacturer's own published work uses 1.5 g, and formulas that include it generally match that amount.
Source: Kalman et al., Nutrients 2016 — “The active treatment contained 1500 mg of ASI (arginine, silicon, inositol and potassium)”
-
Beta-alanine1.5 g
47% of the low end of the studied range0studied range 3.2 g–6.4 g7 g
Studied as a daily loading protocol of 3.2–6.4 g taken for four weeks or longer. A single serving below that range still counts toward the daily total, but one scoop is not a studied dose on its own.
Source: Rezende et al., Frontiers in Physiology 2020 — “It seems that substantial amounts of BA are required to increase MCarn, with most studies using doses of ~3.2–6.4 g·day−1, for periods ranging from 4 to 24 weeks.”
One or more amounts on this label sit inside a proprietary blend, so the individual doses behind the blend total cannot be compared at all.
Common questions about GAT Sport Nitraflex Advanced
How much caffeine is in GAT Sport Nitraflex Advanced?
325 mg per full labeled serving — roughly 3.4 small cups of coffee. Within the Scoop Sense pre-workout database (0–400 mg per serving) that places it in the high stim tier. The FDA cites about 400 mg per day as an amount generally not associated with negative effects in healthy adults, and coffee, tea, and energy drinks count toward the same total.
Why does GAT Sport Nitraflex Advanced make my skin tingle?
The 1.5 g of beta-alanine. The prickling (paresthesia) in the face, neck, and hands is generally considered harmless, is dose-dependent, and fades on its own — typically within about an hour. Most beta-alanine studies use 3.2 g per day.
What does the proprietary blend in GAT Sport Nitraflex Advanced hide?
The blend lists one combined total. A blend total tells you the sum of its ingredients, not the individual doses inside it — which is why blend entries can't be checked against studied amounts.
Do the numbers for GAT Sport Nitraflex Advanced assume one scoop or two?
All figures on this page are per full labeled serving. The label's own limits: start at half a scoop, no more than one scoop in 24 hours, none within 5 hours of bedtime, and a week off after eight weeks.