Mother Bucker Pre-Workout

You remember your first time on pre-workout. The rush. The tunnel vision. The feeling that you could outlift every personal record you ever set. Most pre-workouts stopped delivering that feeling a long time ago. Mother Bucker brings it back.

Built for elite stim-junkies, advanced athletes, and seasoned lifters with sky-high tolerances, Mother Bucker is one of Bucked Up's most intense pre-workout formulas. Every ingredient is fully disclosed, every dose is purposeful, and the formula is stacked from top to bottom.

Start with 400mg of total caffeine: 300mg of Caffeine Anhydrous for an immediate surge of energy, followed by 100mg of Microencapsulated Delay Release Caffeine to keep you pushing through the final sets.* Then there's 6.4g of Beta-Alanine, which at that dose has been shown to support stamina and VO2 Max for enhanced athletic performance.* Nitrosigine delivers rapid increases in blood flow to support serious muscle pumps,* while 4g of L-Citrulline stacks on top to amplify nitric oxide production.* HydroPrime glycerol and Himalayan Pink Salt round out the pump matrix to support hydration during hard training.* Alpha-GPC has been shown to support mental focus and the mind-muscle connection.* Huperzine A works by inhibiting the breakdown of acetylcholine, supporting sharper cognitive performance during intense training.* L-Tyrosine acts as a precursor to dopamine, supporting mood and motivation when the session gets heavy.* AstraGin supports absorption of key ingredients like citrulline to help you get more out of every scoop.*

WARNING: This formula is NOT newbie-friendly. Start with a half scoop to assess your tolerance.

• Caffeine Anhydrous 300mg The first wave of Mother Bucker's dual-phase energy system, fast-absorbing caffeine that hits within 15–30 minutes and launches the session with an immediate surge of intensity, focus, and drive.* This is the "lights on" moment that sets the tone for everything that follows.* It works in tandem with the delayed-release caffeine to keep that energy going long after most pre-workouts would have already faded.*
• Microencapsulated Delay Release Caffeine 100mg The second wave, a form of caffeine wrapped in a food-grade protective coating that slows absorption and releases gradually into your system as your session progresses.* Where most pre-workouts hit hard and fade, Mother Bucker keeps pushing energy into your final sets when others would have already gone quiet.* Combined with caffeine anhydrous, total caffeine per serving is 400mg.*
• Beta-Alanine 6,400mg The maximum dose of beta-alanine, the highest amount used in any published formulation, and the reason Mother Bucker athletes describe pushing past limits that used to feel like hard stops.* It may help buffer the burning sensation in your muscles during all-out sets, sprints, and conditioning work, letting you demand more from your body before fatigue takes over.* The tingling (paresthesia) will be pronounced at this dose, it's harmless, and for many it's exactly what they came for.*
• Nitrosigine® (Inositol-Stabilized Arginine Silicate) 1,500mg The primary pump driver, a patented complex that rapidly expands blood vessels to flood working muscle with blood, oxygen, and nutrients.* The result is a full, vascular pump that arrives quickly and stays present throughout your session, making every muscle feel dense, inflated, and powerful.* Stacked directly on top of L-Citrulline for a dual-pathway pump experience unlike anything in the standard Bucked Up lineup.*
• L-Citrulline 4,000mg A pure citrulline dose stacked alongside Nitrosigine® to amplify nitric oxide production through a different pathway, the two working together to produce a pump that neither could achieve alone.* You'll feel the difference as a deeper, more sustained fullness and a more aggressive vascular response than a single-source pump formula delivers.*
• L-Tyrosine 1,500mg The motivational backbone of Mother Bucker's nootropic stack, an amino acid that fuels the dopamine and norepinephrine pathways responsible for drive, mood, and mental resilience under heavy physical stress.* At 1,500mg, this is a meaningful dose that may help you feel mentally locked in and motivated even during the kind of sessions that would normally break your focus.* The difference between going through the motions and actually showing up.*
• Alpha-GPC (90% Yield, delivering 300mg active) 333mg A highly bioavailable choline source included at its full 300mg active dose, the amount that produces the most noticeable improvements in mental sharpness and mind-muscle connection.* Users describe a sense of laser-like precision where the connection between intent and physical output feels tightened, like your muscles are responding faster and more accurately to what your mind is telling them to do.*
• Theobromine 100mg A naturally occurring alkaloid found in cacao that works as a smooth, longer-acting complement to caffeine, acting as a mild vasodilator and gentle adenosine blocker that may support sustained energy, improved mood, and better blood flow without the sharp peaks and valleys associated with caffeine alone.* Think of theobromine as the ingredient that smooths out the overall stimulant experience and extends it, making 400mg of caffeine feel more controlled and less chaotic.*
• Senactiv® 50mg A plant-based extract of Panax notoginseng and Rosa roxburghii included at the full 50mg dose, the highest amount of Senactiv® in any Bucked Up formula, to support the feeling of endurance and session-over-session recovery that lets you keep training at this intensity day after day.* Your body deserves the support to match the effort Mother Bucker demands of it.*
• AstraGin® 50mg A patented botanical blend of Astragalus membranaceus and Panax notoginseng included at a doubled dose (50mg vs. the 25mg in most Bucked Up formulas) to help your body absorb and utilize the amino acids and key ingredients in this formula, particularly citrulline, so nothing in the scoop goes to waste.*
• Himalayan Rock Salt (with Trace Minerals) 300mg A natural source of sodium and trace minerals included at triple the dose of most Bucked Up formulas to help you feel properly electrolyte-balanced and hydrated during the kind of high-intensity output that Mother Bucker demands.* Also works in concert with the pump matrix, sodium plays a meaningful role in how full and vascular your muscles feel during training.*
• HydroPrime® Glycerol (65% Yield) 500mg A patented, high-concentration form of glycerol that acts as an osmolyte, drawing water into muscle cells to support intramuscular hydration and contributing to that dense, full, hyper-hydrated sensation in the muscle during training.* Rounds out Mother Bucker's triple-pump matrix alongside Nitrosigine® and L-Citrulline.*
• Huperzine A (Huperzia serrata) 200mcg A naturally occurring alkaloid from Chinese club moss that works alongside Alpha-GPC to help sustain mental sharpness from the first set all the way through the last.* By supporting acetylcholine activity in the brain, Huperzine A helps the tunnel-vision focus you feel early in the session stay dialed in as the workout gets heavier and your body gets more fatigued.*
• Rauwolscine (Alpha-Yohimbine) 2mg A plant-derived alkaloid that rounds out Mother Bucker's stimulant profile and may support fat mobilization during training when combined with the rest of the formula.* At 2mg, a small but potent dose, this is the ingredient that amplifies the overall stimulant experience and adds the final edge to a formula that was already running at an elite level.* Approach with respect: this ingredient is part of why Mother Bucker is not for beginners.*

• 400mg Total Caffeine Per Serving 300mg Caffeine Anhydrous for immediate energy* plus 100mg Microencapsulated Delay Release Caffeine to help sustain energy levels throughout your workout.*
• 6,400mg Beta-Alanine To support stamina, endurance, and VO2 Max performance.*
• 1,500mg Nitrosigine (Inositol-Stabilized Arginine Silicate) To support nitric oxide production and blood flow within 30 minutes of consumption.*
• 4,000mg L-Citrulline To support nitric oxide production and muscle pumps, stacked on top of Nitrosigine for a more advanced pump formula.*
• 500mg HydroPrime Glycerol (High-Concentration Form) To support muscle fullness and hydration without clumping.*
• 1,500mg L-Tyrosine As a precursor to dopamine and norepinephrine to support focus and mood during intense training.*
• 300mg Alpha-GPC (90% Yield, Delivering 300mg Active) To support mental focus and the mind-muscle connection.*
• 200mcg Huperzine A To help support memory recall and sustained, tunnel-like focus during training.*
• 100mg Theobromine To complement caffeine for smooth, sustained energy.*
• 50mg Senactiv To help support exercise performance and recovery between hard sessions.*
• 50mg AstraGin To support enhanced absorption of citrulline and other key ingredients.*
• 2mg Rauwolscine To support fat mobilization when combined with exercise.*
• 300mg Himalayan Pink Salt To support hydration and help enhance muscle pump.*
• Fully Transparent Label With exact ingredient dosages, no proprietary blends.
• Designed for Elite Stim-Junkies, Advanced Athletes, and Seasoned Fitness Enthusiasts Only
• 20 Servings Per Tub
• Available Flavors Gym Junkie Juice, Miami, Musclehead Mango, Rocket Pop, Strawberry Super Sets, Franken Juice, and additional rotating flavors.

• Mix 1 level scoop (19.7g) into 8-12 oz of cold water and consume 15-30 minutes before training.
• If you are new to high-stimulant pre-workouts or building your tolerance, start with half a scoop first.
• Do not exceed 1 serving in a 24-hour period. Do not consume caffeine from other sources while taking this product. This product contains 400mg of caffeine per full serving.
• For healthy adults 18 and older only.
• Consult your physician prior to use if you are pregnant or nursing, taking medications, or at risk of or being treated for any medical condition.
• Discontinue use if you experience any adverse reaction. Keep out of reach of children. Store in a cool, dry place.