Gorilla Mode Nitric (Stimulant-Free) Review
#7 of 8 · Best pump✓ Label verified · Supplement Facts read Sep 7, 2026Real retailer photo, cut out. Label unedited.
Buy it. The best stim-free pump — a fully-disclosed 32 g nitric-oxide stack, judged on its own terms. Gorilla Mode Nitric is a purpose-built, caffeine-free pump stack: 10 g citrulline, 5 g creatine, glycerol, betaine, agmatine, nitrates and VasoDrive-AP, all disclosed with no proprietary blends, for serious blood flow with zero stimulants.
$45$1.13 / serving
Why It Scores 7.7 — And The Label Line Behind Each Number
Clinically-dosed actives
30% of scoreElite on the pump, incomplete on the rest. The nitric-oxide doses are best-in-class — 10 g citrulline and 5 g creatine at or above the premium tier, plus glycerol, betaine, agmatine, nitrates and VasoDrive-AP, all disclosed. But the score is held back honestly: there's no beta-alanine (a named active on this axis) because it's a pump formula, not an endurance one, and no caffeine-paired focus active. A maximal pump stack with a deliberately partial active profile.
Label transparency
25% of scoreExemplary. The entire ~32 g serving is disclosed ingredient-by-ingredient with no proprietary blends — you can see all 10 g of citrulline, 5 g of creatine, 4 g of glycerol, 4 g of betaine and 1.5 g of agmatine, exactly the honesty the ranking rewards. Among the most transparent labels in the lineup; nothing is hidden behind a combined number.
- Transparency
- Fully disclosed doses, no proprietary blends (~32 g actives per serving)
Stimulant profile
20% of scoreScored on its own terms, not zeroed for lacking caffeine. As a deliberate stim-free pump pick it's exactly what an evening trainer or caffeine-cutter wants, and it stacks cleanly with any stimulant. But this axis also measures whether the product delivers energy and focus — and on its own it provides none, which is a real functional limitation for a buyer who wants an all-in-one. Credited honestly: ideal for its niche, incomplete as a standalone.
Value per serving
15% of scoreFair for what it is. At about $1.13 a serving it's mid-priced here, but each serving is a loaded ~32 g of disclosed actives — you're paying for genuinely big doses, not a sprinkle. Note the full dose is 2 scoops, so a tub yields around 20 full servings. Reasonable value for a maximal stim-free pump stack, though not a budget play.
- Servings
- ~40 servings by scoop (776 g tub); ~20 full 2-scoop servings
- Price
- $45 ≈ $1.13 per serving
Taste & mixability
10% of scoreThe Cherry Blackout flavor is well-liked and a large two-scoop dose mixes acceptably, though glycerol-heavy pump formulas can settle and need a good shake. The knock for the honesty-minded is that it's artificially colored and sweetened, unlike the naturally-flavored top picks. Pleasant and functional, with an artificial-additive caveat.
- More Specs
- L-Citrulline
- 10 g pure L-citrulline (full 2-scoop dose) — at/above premium tier
- Beta-Alanine
- None — pump-focused formula, not an endurance-buffer one (recorded as absent)
- Caffeine
- 0 mg — completely stimulant-free by design
- Other actives
- 5 g creatine, 4 g HydroPrime glycerol, 4 g betaine, 1.5 g agmatine, nitrates, VasoDrive-AP
Label verified. Every figure read from the Supplement Facts photo, Sep 7, 2026.
Marketing Claims Vs. Reality
A fully-disclosed, no-proprietary-blend nitric-oxide stack.
Accurate and a real strength: the entire ~32 g serving is itemized — 10 g citrulline, 5 g creatine, 4 g glycerol, 4 g betaine, 1.5 g agmatine, plus nitrates and VasoDrive-AP — with nothing hidden behind a combined number. Exactly the transparency the ranking credits.
Delivers massive pumps without stimulants.
Supported by both the doses and the design. The 10 g of citrulline alone exceeds the 6-8 g shown to drive nitric-oxide blood flow (Pérez-Guisado 2010), and it's stacked with glycerol, nitrates and agmatine — all with zero caffeine. A genuine, well-formulated stim-free pump product.
A complete pre-workout for your training.
Only if 'complete' means the pump. It deliberately provides no caffeine for energy or focus and contains no beta-alanine for muscular endurance, so on its own it covers one job, not all of them. Excellent as a pump stack or a stacking base; not a standalone all-in-one pre-workout.
What Our Test Actually Found
The best pure pump stack in the lineup
On disclosed pump doses, nothing here beats it: 10 g of citrulline (above the 6-8 g clinical mark), 5 g of creatine, and a supporting cast of glycerol, betaine, agmatine, nitrates and VasoDrive-AP, all printed on the label. If your single goal is the biggest, most transparent muscle pump, this is the formula — it spends its entire ~32 g serving on blood flow and cell volumization rather than splitting the budget with a stimulant.
Stim-free is the whole point — credit it, understand it
We score this as a deliberate stim-free pick, not a deficient stim one. Zero caffeine is exactly what an evening trainer, a caffeine-cutter, or a stacker wants — it gives the pump and performance support without touching sleep, and layers cleanly on top of any stimulant you choose. The honest flip side: on its own it provides no energy or alertness, so it isn't a one-product answer unless you add your own stim. Bought for its niche, that's a feature; bought as an all-in-one, it's a gap.
No beta-alanine — recorded plainly, by design
This is a pump formula, so it omits beta-alanine entirely — and we record that exactly, rather than rounding up. Beta-alanine saturates muscle carnosine over weeks to buffer fatigue in 1-4 minute efforts; it does nothing for the acute pump this product targets, so leaving it out is a defensible formulation choice. But if you specifically want the endurance benefit (and the tingle), it isn't here — you'd add it separately or pick a formula that includes it, like #1 or #2.
Artificial flavors are the one transparency-adjacent knock
For a product this honest on doses, the artificial coloring and sweetening are the notable caveat next to naturally-flavored leaders like Transparent Labs (#1) and Legion Pulse (#2). It doesn't affect efficacy, and the Cherry Blackout flavor is well-liked — but for a buyer who weights clean, natural formulation, it's a real difference worth flagging.
Full analysis: all pros & cons (8), buy if / skip if
- The biggest disclosed pump stack here — 10 g citrulline + glycerol + nitrates + agmatine + VasoDrive-AP
- Completely stimulant-free — ideal for evening training and clean to stack with any stim
- Includes 5 g creatine monohydrate at a full research dose
- Fully disclosed ~32 g serving with no proprietary blends
- Well-liked Cherry Blackout flavor at fair value (~$1.13 a serving) for the dose
- Zero caffeine — provides no energy or alertness on its own (by design)
- No beta-alanine — none of the endurance-buffer benefit or tingle
- Artificially colored and sweetened, unlike the naturally-flavored top picks
- You train in the evening or late and can't have caffeine wrecking your sleep
- You want the biggest disclosed pump here — 10 g citrulline + glycerol + nitrates + agmatine + VasoDrive-AP
- You like to stack your own stimulant and dose your energy separately
- You want 5 g of creatine monohydrate built into the pump stack
- You want energy and alertness from your pre-workout — this has zero caffeine by design
- You want beta-alanine's endurance benefit and tingle — there is none in this formula
- You prefer naturally-flavored products — this uses artificial colors and sweeteners
Gorilla Mode Nitric is a purpose-built, caffeine-free pump stack: 10 g citrulline, 5 g creatine, glycerol, betaine, agmatine, nitrates and VasoDrive-AP, all disclosed with no proprietary blends, for serious blood flow with zero stimulants. Buy it if you train in the evening, are cutting caffeine, or want to stack your own stim — it's the best pump pick here. Judge it for what it is: it provides no energy on its own, has no beta-alanine, and uses artificial flavors. If you want energy and focus in one scoop, pick a stim formula instead.
Gorilla Mode Nitric is the stim-free pump specialist of this lineup, and judged on its own terms it's excellent. It's a fully-disclosed 32 g nitric-oxide stack — 10 g of L-citrulline, 5 g of creatine monohydrate, 4 g of HydroPrime glycerol, 4 g of betaine, 1.5 g of agmatine, plus nitrates and VasoDrive-AP — engineered for blood flow and cell volumization with zero caffeine. Those citrulline and creatine doses sit at or above the premium clinically-dosed tier, all printed on the label with no proprietary blends. We credit it as a stim-free pick rather than penalizing it for omitting caffeine — but the honest framing cuts both ways. It deliberately provides no energy or alertness on its own, so it isn't a one-product solution unless you add your own stimulant. It also carries no beta-alanine, because it's a pump formula, not an endurance-buffer one — and the flavors are artificially colored and sweetened. It sits at #7 because, scored against a rubric that values a well-judged stimulant and a complete active profile, a deliberately caffeine-free, beta-alanine-free stack scores lower on those axes by design. For evening training, caffeine-cutting, or stacking your own stim, it's the best pump pick here.
The best stim-free pump here — bought for its job, it's a standout.
Judge Gorilla Mode Nitric for what it is, and it's excellent: a fully-disclosed 32 g nitric-oxide stack with 10 g citrulline and 5 g creatine, engineered for serious blood flow with zero caffeine. For anyone who trains late, is cutting back on stimulants, or wants to build their own total caffeine dose by stacking, it's the best pump pick in the lineup — and the transparency of its label is exactly what this ranking rewards. It sits at #7 because the rubric values a well-judged stimulant and a complete active profile, and a deliberately caffeine-free, beta-alanine-free stack scores lower on those axes by design — not by failure. We credit the stim-free choice rather than penalize it, and we record the gaps plainly: no energy on its own, no beta-alanine, artificial flavors. If you want the pump without the stimulant, buy it with confidence. If you want energy and focus in a single scoop, choose a stim formula like Transparent Labs BULK (#1) instead.
If This Doesn’t Fit — Try These
01Transparent Labs BULK
If your complaint about pre-workouts is that you can never tell whether the pump ingredients are actually dosed, Transparent Labs BULK is the answer: 8 g citrulline malate, 4 g beta-alanine, 2.5 g betaine and 300 mg Alpha-GPC, every gram printed on the label, with no proprietary blends and no artificial additives.
03Kaged Pre-Workout Elite
Kaged Pre-Workout Elite is the loaded premium pick: a genuinely comprehensive, fully-disclosed label — 10 g citrulline, 5 g creatine, 3.2 g beta-alanine at the textbook dose, plus tyrosine and Alpha-GPC for focus across 21 ingredients, with 388 mg of organic caffeine driving the energy.
02Legion Pulse
Legion Pulse is the all-natural disclosed pick: 8 g citrulline, 3.6 g beta-alanine, 2.5 g betaine and 300 mg Alpha-GPC, all printed on the label, with natural sweetening and no artificial dyes — and it's made in ISO 17025-accredited labs.
Quick Answers
Will Gorilla Mode Nitric give me energy like a normal pre-workout?
No — and that's by design, not a flaw. It contains zero caffeine and no stimulants of any kind, so it won't give you the alertness jolt you'd get from a stim pre-workout. What it delivers instead is blood flow and 'pump': a disclosed 32 g nitric-oxide stack built on 10 g of L-citrulline plus glycerol, betaine, agmatine, nitrates and VasoDrive-AP. Think of it as the pump half of a pre-workout, deliberately decoupled from the energy half. If you want energy too, either take it alongside a separate stimulant or caffeine source, or choose a stim formula like Transparent Labs BULK (#1).
Why is there no beta-alanine in Gorilla Mode Nitric?
Because it's a pump-focused formula, not an endurance-buffer one — and we record that plainly. Beta-alanine works by saturating muscle carnosine over weeks to buffer fatigue in 1-4 minute efforts; it does nothing for the acute pump this product is built to deliver. So Gorilla Mind left it out and spent the formula on nitric-oxide and cell-volumizing ingredients instead. That's a defensible design choice for a pump stack, but it does mean if you specifically want beta-alanine's endurance benefit (and the tingle), you won't get it here — you'd add it separately or pick a formula that includes it, like the #1 or #2 picks.
When should I take a stim-free pre-workout like this?
Three situations make it ideal. First, evening or late-night training, when caffeine would wreck your sleep — you get the pump and performance support without the stimulant. Second, stacking: if you already have a caffeine source or a separate stim you like, this lets you build your own total dose rather than being locked into whatever a combo product chose. Third, if you're cutting back on caffeine or are stim-sensitive but still want a strong pump. For any of those, a disclosed, caffeine-free stack like this is close to purpose-built.
Is Gorilla Mode Nitric worth the price?
For its specific job, yes. At about $1.13 a serving it's mid-priced in our lineup, but the serving is enormous — roughly 32 g of fully-disclosed actives including 10 g of citrulline and 5 g of creatine, doses that sit at or above the premium clinically-dosed tier. You're paying for a genuinely loaded pump stack, not a sprinkle behind a caffeine number. Note the full dose is 2 scoops, so a tub delivers around 20 full servings. If your priority is the biggest disclosed pump without stimulants, the value is fair; if you want an all-in-one stim pre-workout, this isn't trying to be that.
Can I stack Gorilla Mode Nitric with a stimulant pre-workout?
Yes — that's one of its best uses. Because it's purely a pump-and-performance stack with no caffeine, it layers cleanly on top of a stimulant of your choice without doubling up on anything. Some lifters pair it with a simple caffeine pill or a stim-focused product to dial in exactly the energy they want while keeping the big disclosed pump doses. Just be sensible about total caffeine from all sources and keep under the 400 mg daily ceiling. Stacking is precisely why a stim-free, fully-disclosed pump formula is so flexible.
Sources & Further Reading
3 peer-reviewed sources, each linked to PubMed
- [1] Pérez-Guisado 2010 PMID 20386132 — Citrulline malate enhances athletic anaerobic performance and relieves muscle soreness. A single 8 g dose of citrulline malate significantly increased bench-press repetitions and reduced muscle soreness versus placebo. Direct support for the nitric-oxide pump mechanism this stack is built on — and its 10 g citrulline dose sits above that clinical mark.
- [2] Hobson 2012 PMID 22270875 — Effects of β-alanine supplementation on exercise performance: a meta-analysis. Beta-alanine improved exercise outcomes versus placebo, concentrated in 60-240 s efforts via muscle-carnosine saturation over weeks. Explains why this acute pump formula legitimately omits beta-alanine — the ingredient targets a different, endurance-buffer job entirely.
- [3] Saunders 2017 PMID 27797728 — β-alanine supplementation to improve exercise capacity and performance: a systematic review and meta-analysis. An updated meta-analysis of 40 studies found a small but significant ergogenic effect of beta-alanine, greatest in 30 s-10 min efforts. Confirms beta-alanine is an endurance buffer, not a pump agent — context for its deliberate absence from this nitric-oxide stack.
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