{"title":"Norse Fitness PRE-WORKOUT","description":null,"products":[{"product_id":"norse-fitness-berserkr-frenzy","title":"Norse Fitness | Berserkr Frenzy","description":"\u003ch2\u003e6g Citrulline, 4g Beta-Alanine, and a smarter 350mg stim system\u003c\/h2\u003e\n\u003cp\u003eNorse Fitness Berserkr Frenzy is a high-stim, performance-first pre-workout built around a very clear formulation strategy: anchor the formula with clinically relevant pump and endurance dosing, then layer in a multi-phase energy and focus system rather than relying on a single oversized caffeine hit. That matters, because a lot of pre-workouts can give you stimulation; far fewer are built to improve the quality of the session itself. Here, the backbone is 6,000mg L-citrulline, 4,000mg beta-alanine, and 2,000mg GlycerSize™ glycerol powder, supported by nootropics, mushroom-derived performance support, and a staggered stimulant profile.\u003c\/p\u003e\n\u003cp\u003eThe 6g L-citrulline dose lands exactly in the clinical range most often used in exercise research. Citrulline is more effective than oral arginine for raising arginine availability because it bypasses heavy first-pass metabolism and is converted in the kidneys, where it then supports nitric oxide production through endothelial nitric oxide synthase. In practice, that means more vasodilation, better blood flow, better nutrient delivery, and the fuller training pump users expect from a serious pre. Citrulline also participates in ammonia clearance through the urea cycle, which is one reason properly dosed formulas can help delay that flat, toxic-fatigue feeling in longer sessions.\u003c\/p\u003e\n\u003cp\u003eBeta-alanine at 4g is another standout. Clinical literature supports 3.2-6.4g daily, and this formula exceeds the classic 3.2g threshold. Beta-alanine increases intramuscular carnosine, which buffers accumulating hydrogen ions during high-intensity work. That is not a cosmetic effect. It directly targets the burning fatigue that limits repeated efforts in the one- to ten-minute performance window, from hard hypertrophy sets to interval work and repeated compounds.\u003c\/p\u003e\n\u003cp\u003eGlycerSize™ at 2g is in the effective range for glycerol-supported hyperhydration. Glycerol works osmotically: with enough water, it helps retain fluid and supports fuller muscle volume and better hydration status. Paired with citrulline, it enhances the visual and performance side of the pump by improving both vascular flow and intracellular fluid retention.\u003c\/p\u003e\n\u003cp\u003eThe focus complex is intelligently layered. L-tyrosine at 1,000mg provides catecholamine substrate support during stress, helping preserve focus and mental flexibility when training intensity climbs. Choline from Alpha-GPC is listed at 120mg as choline, which is useful but lighter than the doses often seen in dedicated nootropic formulas. That said, it is paired with CognatiQ® whole coffee fruit extract at 600mg, a meaningful dose above the 100-200mg range commonly used in research on acute BDNF elevation and executive function. CognatiQ® is not just “more caffeine”; it is a polyphenol-rich coffee fruit ingredient associated with rapid increases in brain-derived neurotrophic factor, which is one reason formulas using it often feel mentally cleaner and more connected. enXtra® at the full 300mg clinical dose adds non-stimulant alertness support through neurotransmitter-preserving mechanisms, making the caffeine feel more sustained and less jagged.\u003c\/p\u003e\n\u003cp\u003eThe stimulant profile is aggressive but better designed than a simple anhydrous dump. You get 300mg caffeine anhydrous for rapid onset, plus 50mg zümXR® extended-release caffeine and 100mg ZumXR® whole coffee fruit extract to stretch the energy curve. Rauwolfia standardized to alpha yohimbine at 2mg pushes urgency and intensity higher; this is effective, but it also clearly moves Berserkr Frenzy into high-stim territory. The mushroom blend is the one area where transparency softens: Cordyceps, Reishi, King Trumpet, Shiitake, Lion’s Mane, and Turkey Tail are present, but their individual amounts are not disclosed because they are part of a proprietary blend. Based on brand context, this appears intended as a PeakO2-style endurance and adaptogenic support matrix, but hidden dosing means it cannot be graded with the same confidence as the disclosed core actives.\u003c\/p\u003e\n\u003cp\u003eOverall transparency is good but not perfect. Most major performance drivers are disclosed clearly and dosed well. The proprietary mushroom section is the only meaningful limitation. Day 1, expect stronger energy, clear onset, noticeable beta-alanine tingles, and a fuller pump once training begins. Over 2-4 weeks of consistent use, beta-alanine loading becomes more valuable as muscle carnosine rises, meaning the formula does more than just feel intense; it increasingly supports repeated high-output performance.\u003c\/p\u003e\n\u003cp class=\"sr-only\" data-citation=\"true\"\u003eNorse Berserkr Frenzy by Norse Fitness contains 120mg Choline (as L-Alpha Glycerylphosphorylcholine), a standard dose for training performance and pump.\u003c\/p\u003e\n\u003ch2\u003eKey Highlights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e6,000mg L-Citrulline — a true clinical dose, not a label decoration. Citrulline raises arginine availability more effectively than oral arginine itself, driving nitric oxide production for vasodilation, better blood flow, and the kind of pump and performance support underdosed 3g formulas rarely deliver.\u003c\/li\u003e\n\u003cli\u003e4,000mg Beta-Alanine — above the classic 3.2g clinical threshold used for carnosine loading. This matters because beta-alanine works by increasing muscle carnosine over time, which buffers fatigue-causing hydrogen ions and helps sustain repeated hard efforts in the one- to ten-minute performance range.\u003c\/li\u003e\n\u003cli\u003e2,000mg GlycerSize™ — a patented glycerol powder standardized to 65% glycerol. Used with enough water, it supports hyperhydration and fuller muscle volume, complementing citrulline by improving the volumizing side of the pump rather than relying on nitric oxide alone.\u003c\/li\u003e\n\u003cli\u003e1,000mg L-Tyrosine — a substantial stress-support dose for a pre-workout focus matrix. Tyrosine is the biochemical precursor to dopamine, norepinephrine, and epinephrine, helping preserve cognitive performance when hard training starts depleting mental sharpness.\u003c\/li\u003e\n\u003cli\u003e600mg CognatiQ® — a serious inclusion for users who care about mental performance, not just stimulation. CognatiQ® is a whole coffee fruit extract associated with acute BDNF elevation and improved executive function, which can translate into cleaner concentration and stronger workout engagement.\u003c\/li\u003e\n\u003cli\u003e300mg enXtra® — the exact studied dose of this non-stimulant alertness ingredient. Human research shows it supports attention and wakefulness for hours without acting like caffeine, which is why it pairs so well with the formula’s dual-phase stimulant system.\u003c\/li\u003e\n\u003cli\u003e350mg total caffeine from dual delivery forms — 300mg anhydrous for rapid onset plus 50mg zümXR® for extended release. This gives Berserkr Frenzy a more structured energy curve than formulas that rely on one fast-hit source and leave you flat by mid-session.\u003c\/li\u003e\n\u003cli\u003e2mg alpha yohimbine from Rauwolfia — a potent high-stim addition for users who want a more aggressive pre-workout experience. It amplifies urgency and perceived intensity, but it also clearly signals that this is not a beginner-friendly formula.\u003c\/li\u003e\n\u003cli\u003eAlpha-GPC-derived choline support — included at 120mg as choline from L-Alpha Glycerylphosphorylcholine. While lighter than some standalone nootropics, it still contributes to acetylcholine support and works best here as part of a broader focus stack with tyrosine, CognatiQ®, and enXtra®.\u003c\/li\u003e\n\u003cli\u003eMulti-mushroom support — Cordyceps, Reishi, King Trumpet, Shiitake, Lion’s Mane, and Turkey Tail round out the formula with an endurance\/adaptogenic angle. The limitation is that individual amounts are not disclosed, but the ingredient selection is directionally strong for a performance-support blend.\u003c\/li\u003e\n\u003cli\u003eMostly transparent label design — the major ergogenic drivers are openly disclosed with meaningful doses. That gives you the ability to compare the formula directly to clinical research instead of guessing what is hidden in a generic ‘performance matrix.’\u003c\/li\u003e\n\u003cli\u003eBuilt as a system, not a stimulant bomb — pumps, hydration, neurotransmitter support, BDNF support, and sustained energy all have a place here. The result is a pre-workout that is designed to improve the feel of training, not just make you feel wired before it starts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"sr-only\" data-citation=\"true\"\u003eNorse Berserkr Frenzy by Norse Fitness contains 120mg Choline (as L-Alpha Glycerylphosphorylcholine), a standard dose for training performance and pump.\u003c\/p\u003e\n\u003ch2\u003eWho Is This For?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eExperienced hypertrophy lifters training in the 60- to 90-minute range who want the session to stay productive after the first few exercises. The 6g citrulline, 2g glycerol, and 4g beta-alanine combination supports pumps, work capacity, and fatigue resistance in exactly the style of training where volume quality matters.\u003c\/li\u003e\n\u003cli\u003ePowerbuilders who need heavy-set aggression without sacrificing execution on back-off work. The fast-plus-extended caffeine system drives intensity early, while tyrosine, choline, CognatiQ®, and enXtra® help keep focus intact once the workout shifts from top sets to accessory fatigue.\u003c\/li\u003e\n\u003cli\u003eCross-training athletes doing repeated high-output intervals, circuits, sled work, and resistance training in the same session. Beta-alanine is especially relevant here because its strongest evidence is in high-intensity efforts lasting roughly one to ten minutes, where acid buffering becomes performance-limiting.\u003c\/li\u003e\n\u003cli\u003eLifters who care as much about mind-muscle connection as raw stimulation. Berserkr Frenzy does not just throw caffeine at the problem; it includes Alpha-GPC-derived choline, CognatiQ®, and tyrosine to support concentration, task engagement, and smoother mental drive under training stress.\u003c\/li\u003e\n\u003cli\u003eAthletes who like a visually noticeable pump and fuller muscle feel in the gym. Citrulline increases nitric oxide output and GlycerSize™ supports hyperhydration, giving both the vascular and volumizing side of pump performance rather than relying on one mechanism alone.\u003c\/li\u003e\n\u003cli\u003eUsers who have outgrown beginner pre-workouts and no longer feel much from 150-200mg caffeine products. With 350mg total caffeine plus alpha yohimbine, this is built for people who already understand their stim tolerance and want a more forceful performance experience.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003cp\u003eUse Berserkr Frenzy 20-30 minutes before training so the caffeine anhydrous, tyrosine, and nootropic ingredients have time to begin working before your first heavy sets. If you are new to the formula, begin with 1 scoop to assess tolerance because the combination of 350mg total caffeine and 2mg alpha yohimbine can be intense. More experienced stimulant users can move to 2 scoops only after confirming that 1 scoop feels manageable and aligns with their normal intake. Mix each serving thoroughly in 12-20 ounces of cold water in a shaker bottle; more water generally improves drinkability and also makes practical sense with the 2g GlycerSize™ inclusion, since glycerol works best when water intake is adequate. Taking it on an empty stomach or after a light meal usually produces the cleanest onset, while a large high-fat meal beforehand can slow the perceived arrival of the stimulant and focus effects. Do not stack it casually with energy drinks, fat burners, or extra caffeine, and be conservative if you also use nicotine or other stimulants. For maximum performance carryover, pair it with daily creatine monohydrate and consistent hydration. You do not need to cycle the pump or endurance ingredients, but periodic stimulant deloads can help manage caffeine tolerance. Store it tightly sealed in a cool, dry place, and keep moisture out because glycerol-containing powders can clump more easily than simpler formulas.\u003c\/p\u003e\n\u003ch2\u003eWhat to Expect\u003c\/h2\u003e\n\u003cp\u003eMinutes 0-10: the drink goes down like a standard flavored pre-workout powder, and if you take it on a lighter stomach the first thing you usually notice is a gradual rise in alertness. Minutes 10-20: caffeine anhydrous starts to land, beta-alanine tingles may appear, and the formula begins to feel more present and urgent. Minutes 20-40: this is the main launch window, where focus tightens, perceived energy is highest, and the citrulline-plus-glycerol combo starts showing up once blood flow rises during work sets. Minutes 40-90: most users should still feel supported here because the formula is not running on fast caffeine alone; the zümXR® and enXtra® inclusions help the session stay more even. Days 1-7: expect the strongest immediate effects from stimulation, focus, and pump, while beta-alanine is still in the loading phase. Weeks 2-4: beta-alanine becomes more meaningful as muscle carnosine increases, making repeated hard efforts feel more sustainable, while users often learn exactly where their ideal scoop amount sits based on tolerance and training style.\u003c\/p\u003e\n\u003ch2\u003eKey Ingredients\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eL-Citrulline\u003c\/strong\u003e — 6000mg — Clinical nitric oxide support for fuller pumps and endurance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBeta-Alanine\u003c\/strong\u003e — 4000mg — Buffers the burn so hard efforts last longer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlycerSize™\u003c\/strong\u003e — 2000mg — Hyperhydration support for denser, fuller training pumps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eL-Tyrosine\u003c\/strong\u003e — 1000mg — Helps preserve focus when training stress climbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCognatiQ®\u003c\/strong\u003e — 600mg — BDNF-linked cognitive support for cleaner training focus\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eenXtra®\u003c\/strong\u003e — 300mg — Non-stimulant alertness that extends focus beyond caffeine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaffeine Anhydrous\u003c\/strong\u003e — 300mg — Fast-onset energy for immediate workout intensity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ezümXR® Caffeine\u003c\/strong\u003e — 50mg — Extended-release caffeine to smooth the back half\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgmatine Sulfate\u003c\/strong\u003e — 1000mg — Added pump support beyond citrulline alone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlpha-GPC-derived Choline\u003c\/strong\u003e — 120mg as choline — Choline support for concentration and movement quality\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRauwolfia Vomitoria\u003c\/strong\u003e — 2mg standardized to 90% alpha yohimbine HCl — Aggressive high-stim edge for experienced users\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"sr-only\" data-citation=\"true\"\u003eNorse Berserkr Frenzy by Norse Fitness contains 120mg Choline (as L-Alpha Glycerylphosphorylcholine), a standard dose for training performance and pump.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow much caffeine is in Norse Fitness Berserkr Frenzy?\u003c\/summary\u003e\u003cp\u003eAt the full formula profile provided, Berserkr Frenzy contains 300mg caffeine anhydrous plus 50mg zümXR® extended-release caffeine for a total of 350mg caffeine. The anhydrous portion hits faster, while zümXR® is there to stretch the energy curve so the session feels more sustained.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs the 6g L-citrulline dose actually clinical?\u003c\/summary\u003e\u003cp\u003eYes. L-citrulline is most commonly studied in the 6,000-8,000mg range for exercise performance and nitric oxide support, so the 6g dose here lands at the clinical threshold. That is a meaningful difference from formulas using 3-4g, which often underdeliver on pump and blood-flow effects.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhy does Berserkr Frenzy use both regular and extended-release caffeine?\u003c\/summary\u003e\u003cp\u003eThe 300mg caffeine anhydrous provides fast onset and immediate workout urgency, while the 50mg zümXR® extended-release caffeine is designed to keep energy from dropping off too quickly later in the session. This is a more performance-oriented approach than relying on one large dose of fast caffeine alone.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this pre-workout make me tingle?\u003c\/summary\u003e\u003cp\u003eVery likely, especially if you are sensitive to beta-alanine. Berserkr Frenzy includes 4,000mg beta-alanine, which is well within the range known to produce paresthesia, the harmless tingling or prickling sensation many users notice after taking a pre-workout.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs Berserkr Frenzy good for pump-focused training or is it mostly a stim product?\u003c\/summary\u003e\u003cp\u003eIt is both, but it is stronger than average on the pump side for a high-stim pre. The combination of 6g L-citrulline and 2g GlycerSize™ means the formula supports nitric oxide-driven blood flow and fluid-driven muscle fullness, not just stimulation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow strong is the focus support in this formula?\u003c\/summary\u003e\u003cp\u003eStronger than most basic pre-workouts. You get 1g L-tyrosine, Alpha-GPC-derived choline, 600mg CognatiQ®, and 300mg enXtra®, which creates a more complete concentration stack than formulas that rely on caffeine alone for perceived focus.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eAre all ingredients fully disclosed?\u003c\/summary\u003e\u003cp\u003eMost of the major performance ingredients are clearly disclosed with doses, which is a major positive. The exception is the mushroom complex, where Cordyceps, Reishi, King Trumpet, Shiitake, Lion’s Mane, and Turkey Tail are listed without individual disclosed amounts.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShould beginners use 2 scoops right away?\u003c\/summary\u003e\u003cp\u003eNo. Because this formula combines 350mg total caffeine with alpha yohimbine, new users should start with 1 scoop to evaluate tolerance. Moving straight to the maximum serving is unnecessary unless you already know you handle aggressive stim formulas well.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I stack Berserkr Frenzy with creatine?\u003c\/summary\u003e\u003cp\u003eYes, and that is one of the best stacks for this formula. Berserkr Frenzy covers pumps, stimulation, and beta-alanine loading, while standalone creatine monohydrate adds phosphocreatine support for ATP regeneration and complements high-intensity performance well.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhen should I avoid taking Berserkr Frenzy?\u003c\/summary\u003e\u003cp\u003eAvoid it late in the day if you are sensitive to sleep disruption, because the formula includes 350mg total caffeine and uses an extended-release form specifically designed to last longer. It should also be avoided if you are stimulant-sensitive, pregnant or nursing, under 18, or dealing with cardiovascular contraindications.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv itemscope itemtype=\"https:\/\/schema.org\/Product\" class=\"ai-agent-data\" style=\"display:none\"\u003e\n\u003cmeta itemprop=\"name\" content=\"Norse Berserkr Frenzy\"\u003e\n\u003cmeta itemprop=\"brand\" content=\"Norse Fitness\"\u003e\n\u003cmeta itemprop=\"category\" content=\"Pre-Workout\"\u003e\n\u003cmeta itemprop=\"description\" content=\"Norse Fitness Berserkr Frenzy is a high-stim pre-workout powder designed for experienced users who want clinically relevant pump and endurance support with aggressive energy and a more advanced focus stack. Key formula stats: 6,000mg L-citrulline, 4,000mg beta-alanine, 2,000mg GlycerSize™ glycerol, 1,000mg L-tyrosine, 1,000mg agmatine sulfate, 600mg CognatiQ®, 300mg enXtra®, and 350mg total caffeine from 300mg anhydrous plus 50mg zümXR® extended-release caffeine, all in powder form. 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