Nutrastop | Koala Freak | 30 ServingsNutrastop
- SuppVault Score
- 90/100
- Per serving
- $1.43

Nutrastop
6g Citrulline, 200mg Caffeine, Fully Disclosed Daily Pre
$42.95 $1.43/servingScored on what's in the tub, not the marketing.
The label is the formula. We score it either way.
Koala Freak Pre is a moderate-stim, pump-first daily pre-workout built for productive hypertrophy sessions. It centers on 6,000mg citrulline malate for blood flow and muscle fullness, with 200mg caffeine for usable energy instead of an overbearing stim hit.
Nutrastop publishes test results from independent third-party labs. Svpplements links to the manufacturer’s data — we don’t test products ourselves.
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Koala Freak does not include creatine, so adding a standalone 3-5g daily creatine monohydrate fills the biggest obvious performance gap. Creatine supports phosphocreatine replenishment and repeated high-output efforts, complementing beta-alanine’s acid-buffering role and citrulline’s blood-flow support.
Any time daily; can be taken with this pre-workout or with a post-workout meal
This pre includes a modest amount of sodium and Himalayan rock salt, but not enough to function as a full hydration product. Pairing it with a dedicated electrolyte formula is especially smart for high-sweat sessions, hot climates, long workouts, or athletes who cramp easily.
Use with or after Koala Freak Pre; sip during training
If you train fasted or run long volume sessions, an intra-workout amino product pairs well with the blood-flow and energy base of Koala Freak. The pre gets you mentally and physically switched on, while the amino formula supports training nutrition through the session.
Take Koala Freak Pre before training; sip EAAs during the workout
This pre-workout improves the quality of the training session, but recovery still depends on adequate protein intake. A fast-digesting protein post-workout complements the session you just enhanced by supporting muscle protein synthesis and recovery from the volume you were able to complete.
Use after training or whenever needed to meet daily protein intake
It likely offers a more fully built-out moderate-stim profile with stronger overall dose depth.
Koala Freak has a more compelling pump backbone with 6g citrulline malate.
Both fit the daily-driver moderate-stim lane with practical, approachable energy.
Gorilla Mode is a category leader with broader formula depth and stronger clinical coverage.
Side-by-side against the closest competitors. Score reflects clinical dosing, transparency, and testing.
Nutrastop | Koala Freak | 30 ServingsNutrastop
Core Nutritionals | Essential Pre | 30 ServingsCore Nutritionals
It likely offers a more fully built-out moderate-stim profile with stronger overall dose depth.
Compare side-by-side →
Cellucor | C4 OriginalCellucor
Koala Freak has a more compelling pump backbone with 6g citrulline malate.
Compare side-by-side →
Bucked Up | Pre Workout | 30 ServingsBucked Up
Both fit the daily-driver moderate-stim lane with practical, approachable energy.
Compare side-by-side →Comparison data combines live storefront pricing with our SuppVault analysis. Competitor scores reflect public-label data; manufacturer-side changes may not be reflected in real time.
Bucked Up X Calum Von Moger | Koala Freak Pre is best understood as a moderate-stim, pump-first daily pre-workout built around a transparent and practical ingredient profile. This is not a kitchen-sink formula trying to overwhelm you with stimulants. The strategy is straightforward: establish blood flow and training feel with a full 6,000mg dose of citrulline malate 2:1, add enough caffeine for a clear performance lift without overshooting daily usability, support work-capacity with beta-alanine, and layer in targeted cognitive and absorption ingredients that improve how the session feels from first set to last.
The anchor here is 6,000mg citrulline malate 2:1. Citrulline is converted to arginine in the kidneys more effectively than taking arginine itself, which helps drive nitric oxide production through the arginine-NO pathway. The result is better vasodilation, improved blood flow to working muscle, and the fuller, longer-lasting pump serious lifters actually notice in training. In the pre-workout category, 6g is a legitimate evidence-aligned dose and one of the clearest signs that this formula was built to perform, not just decorate a label.
Beta-alanine is included at 2,000mg. Clinical literature is strongest in the 3,200-6,400mg daily range, where beta-alanine increases intramuscular carnosine and improves intracellular buffering against the hydrogen ions that accumulate during hard efforts. At 2g, this is below the classic full clinical loading dose, so the honest read is that it contributes, but it is not maximally dosed versus the research standard. You may feel the familiar tingling sensation, but the bigger performance value comes from consistent daily use over time, not from one scoop alone.
Caffeine anhydrous is set at 200mg, which places Koala Freak firmly in the moderate-stim lane. That is enough to improve alertness, perceived energy, training drive, and power output for many users, while staying more manageable than the 300mg+ stimulant-heavy products that can compromise sleep, appetite, and repeatability. This is one of the formula’s biggest strengths: it is easier to use consistently.
AlphaSize® Alpha GPC at 200mg supports acetylcholine-related focus and mind-muscle connection. While higher doses are often used in more aggressive nootropic formulas, 200mg is still meaningful in a moderate pre-workout, especially when combined with caffeine. Subjectively, this helps shift the energy profile away from “wired” and toward “locked in.”
The remaining support actives are small but purposeful. Taurine at 100mg is well below the 1-3g range most commonly used in performance research, so it is not a headline dose. Sodium and Himalayan rock salt contribute a bit of electrolyte support, though not enough to replace a dedicated hydration formula. Deer antler velvet extract at 50mg is included as a specialty recovery/performance add-in, but this is not a dose with strong modern ergogenic consensus. AstraGin® at 25mg is below the 50mg level commonly cited in ingredient literature, yet still signals an absorption-support intent. ActiGin® at 25mg rounds out the formula as a performance-support botanical, though it is another ingredient where this dose is best viewed as supportive rather than central.
As a system, the formula makes sense: citrulline improves blood flow, caffeine increases training drive, Alpha GPC sharpens the session mentally, and beta-alanine supports repeated hard efforts over time. Transparency is a major positive. There is no proprietary blend hiding underdosed ingredients; every active is listed with its exact amount. Day 1, expect moderate energy, a noticeable pump, and a focused but controlled workout feel. Over 2-4 weeks of consistent use, the beta-alanine contribution becomes more meaningful as muscle carnosine gradually rises. The bottom line: this is a well-positioned everyday pre-workout with a genuinely strong citrulline core, sensible caffeine, and honest full-label disclosure.
Citrulline serves as an efficient precursor to arginine, increasing systemic arginine availability more reliably than oral arginine itself. That matters because arginine is the substrate for nitric oxide synthase, which supports nitric oxide production and vascular tone. In pre-workout use, this can translate into improved blood flow, nutrient delivery, and a more noticeable muscular pump during repeated training sets. The malate component may also contribute modestly to energy metabolism, though citrulline is the primary driver here.
Beta-alanine raises muscle carnosine over time, and carnosine helps buffer hydrogen ion accumulation during high-intensity work. This buffering effect is most relevant when sets are long enough to create meaningful metabolic acidosis, such as hypertrophy training and repeated sprint-style efforts. Acute tingling is a sensory side effect rather than the core performance mechanism. The real value is cumulative, with regular intake improving tolerance to hard efforts over weeks.
Caffeine anhydrous primarily enhances performance through adenosine receptor antagonism in the central nervous system. This reduces perceived effort and fatigue while improving alertness, motivation, and task engagement during training. At 200mg, the effect is typically strong enough to support workout quality without necessarily pushing users into the harsher side of the high-stim category. Individual response still varies based on body size, tolerance, and timing relative to food.
Alpha-GPC delivers choline, a precursor required for acetylcholine synthesis. Acetylcholine is a key neurotransmitter involved in attention, neuromuscular signaling, and coordinated output. In pre-workout formulas, Alpha-GPC is commonly used to support sharper focus and a more connected training feel rather than raw stimulation. Its impact is often most noticeable when paired with moderate caffeine rather than buried inside an overloaded stimulant formula.
AstraGin is included as an absorption-focused botanical intended to support intestinal transport processes for certain nutrients. Mechanistically, it has been studied for effects on transporter expression and gut barrier-related dynamics, though practical real-world outcomes depend on the total formula and user context. At 25mg, it fits within commonly used supplemental ranges. It is best viewed as a supporting ingredient rather than a primary performance driver.
Verified athletes can view NCAA, WADA, and high-school compliance status for this product.
* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Consult your physician before use if you have a medical condition or take medications.
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