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Cellucor
C4 Sport
Our analysis — editorial take, not from the label
One of the few pre-workouts that actually carries the NSF Certified for Sport mark on the tub, which is the reason to buy it if you are drug-tested. The dosing is the trade-off: the panel prints every number, but beta-alanine at 2 g, arginine at 2 g and creatine nitrate at 1 g all sit below the amounts used in research. The current 5th-generation label runs 200 mg caffeine; older 135 mg panels still circulate.
- Caffeine
- 200 mg
- Citrulline
- —
- Beta-alanine
- 2 g
- Servings
- 20
Price tier: Mid-range · relative cost per full serving across this database
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A rotating candy-and-punch lineup (Watermelon, Icy Blue Razz, Uncle Samberry, Frozen Bombsicle); zero sugar, sweetened with sucralose and acesulfame potassium and colored with spirulina extract instead of artificial dye.
Label verified: September 2026 · View supplement facts image
Label data
Per full serving · 20 servings per container · from the manufacturer's panel
| Caffeine | 200 mg |
|---|---|
| Beta-Alanine | 2 g |
| L-Arginine | 2 g |
| Creatine Nitrate | 1 g |
| Proprietary blend | No |
Primary label source: Cellucor — official product page · verified September 2026
Cautions
- Beta-alanine tingles are possible at 2 g
- The 1 g of creatine nitrate is a fraction of a standalone creatine serving, so it does not replace a separate creatine supplement
- Carries 225 mg sodium and 340 mg chloride per scoop from added sea salt — worth noting if you track sodium
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 200 mg at the studied amount for a 33–67 kg adult. Full health & safety notes
Product details
Where this label sits
Cellucor C4 Sport sits in the moderate stim tier of the Scoop Sense pre-workout database, which spans 0–400 mg of caffeine per serving. Every active ingredient on the panel is listed with its own dose — nothing is hidden inside a blend total. It runs 20 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
- Beta-Alanine · 2 g. Under the 3.2 g/day used in most beta-alanine research, though the ingredient works off cumulative daily intake over weeks rather than any single serving.
- L-Arginine · 2 g. Well under the amounts used in arginine blood-flow research, and arginine is absorbed less efficiently than the citrulline most pumps formulas now use.
- Creatine Nitrate · 1 g. Far below the 3-5 g daily amount used in creatine research, and nitrate-bound creatine carries less creatine by weight than monohydrate.
- Caffeine Anhydrous · 200 mg. A mid-range dose, roughly what most caffeine performance studies use for an average-sized adult.
Flavors & sweetener
A rotating candy-and-punch lineup (Watermelon, Icy Blue Razz, Uncle Samberry, Frozen Bombsicle); zero sugar, sweetened with sucralose and acesulfame potassium and colored with spirulina extract instead of artificial dye.
Who it's best for
Most regular gym-goers — the caffeine dose is in the range of about two cups of coffee. 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.
-
Beta-alanine2 g
63% 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.”
-
L-arginine2 g
Plain L-arginine is poorly absorbed as an oral pump ingredient; citrulline raises blood arginine more reliably, which is why the research moved to it.
-
Creatine nitrate1 g
Creatine nitrate carries less creatine per gram than monohydrate and has no separately established studied dose, so the 3–5 g monohydrate figure does not transfer to it.
-
Caffeine200 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.”
Common questions about Cellucor C4 Sport
How much caffeine is in Cellucor C4 Sport?
200 mg per full labeled serving — roughly 2.1 small cups of coffee. Within the Scoop Sense pre-workout database (0–400 mg per serving) that places it in the moderate 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 Cellucor C4 Sport make my skin tingle?
The 2 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.
Does Cellucor C4 Sport disclose every dose?
Yes — the label lists an individual amount for each ingredient, with no proprietary blends. That is what the "label fully disclosed" tag on Scoop Sense means, and it is what lets each dose be compared against the amounts used in published research.
Do the numbers for Cellucor C4 Sport assume one scoop or two?
All figures on this page are per full labeled serving. Carries 225 mg sodium and 340 mg chloride per scoop from added sea salt — worth noting if you track sodium.