In the relentless pursuit of mental sharpness and physical prowess, Xendurance has always stood at the forefront of innovative supplementation. Our flagship nootropic, Focus, is designed for athletes, gamers, and high-performers who demand more than just fleeting energy— they crave sustained clarity, laser-like focus, and unbreakable resilience. At the heart of Focus lies AlphaSize®, a premium, patented form of Alpha-Glycerylphosphorylcholine (A-GPC) from Chemi Nutra. Unlike generic choline sources that fizzle out before reaching the brain, AlphaSize® is engineered for maximum bioavailability, crossing the blood-brain barrier with ease to supercharge acetylcholine production—the neurotransmitter powerhouse for cognition and coordination.

Why AlphaSize®? Because in a world flooded with subpar nootropics, Xendurance refuses to compromise. We've scoured decades of research to select an ingredient backed by rigorous clinical trials, not hype. AlphaSize® isn't just another additive; it's the gold standard for bridging mind and muscle, delivering jitter-free boosts that last. Whether you're crushing a deadlift PR or outmaneuvering opponents in a virtual arena, Focus with AlphaSize® elevates your game.

Why AlphaSize® Stands Above the Rest

AlphaSize® isn't your average A-GPC—it's the pinnacle of choline supplementation, derived naturally from soy lecithin through a proprietary, non-GMO process that ensures purity and potency. While generic A-GPC often relies on synthetic methods prone to impurities like genotoxins, AlphaSize® boasts 99%+ purity, water solubility, and zero taste or odor, making it versatile for stacks like Focus. This natural edge translates to superior absorption: up to 40% more bioavailable than standard forms, flooding the brain with choline to fuel acetylcholine synthesis without the digestive upset of alternatives like lecithin.

What sets it apart? Decades of validation. AlphaSize® was introduced nearly 25 years ago, amassing a library of human trials showing real-world gains in mental acuity and power output—gains that generics can't match due to inconsistent quality. In Xendurance Focus, we dose it at 300mg per serving, hitting the sweet spot from studies: enough to spike performance without overload. It's not just better—it's the only choice for those who train like champions.

FDA GRAS Status and 30 Years of Rigorous Research

Safety isn't negotiable at Xendurance, which is why AlphaSize®'s FDA Generally Recognized as Safe (GRAS) status is a cornerstone of our trust in it. In 2012, Chemi Nutra submitted GRN 419, earning FDA's "No Questions" affirmation for use in beverages and foods up to 196mg/serving—well above our Focus formulation.  This self-affirmed GRAS, coupled with USP monograph verification in 2019, confirms its purity and stability under cGMP standards. No hidden risks, just proven reliability.

The research backbone? Over 30 years of global studies, starting in the 1990s, with pharmaceutical applications in Europe for cognitive decline. From early trials on stroke recovery to modern ergogenic validations, AlphaSize® has been dissected in RCTs, meta-analyses, and crossovers—totaling dozens of publications. This isn't fad science; it's a legacy of evidence, ensuring every scoop of Focus is a calculated win for brain and body.

Brain Health: Safeguarding the Neural Fortress

Your brain is your ultimate asset, but modern stressors—from endless notifications to oxidative damage—erode it silently. AlphaSize® fortifies this fortress by replenishing choline, a vital nutrient depleted in 90% of adults, directly supporting neuronal integrity.  It elevates acetylcholine, shielding against age-related decline and inflammation.

For Alzheimer's, where cholinergic neurons perish early, studies shine. A landmark 2003 multicenter RCT with 261 mild-to-moderate patients found that 1,200mg daily Alpha-GPC improved cognition by 14% on ADAS-cog scales over 180 days, outperforming placebo and even augmenting donepezil's effects in a 2014 trial of 113 participants. A 2023 meta-analysis of 54 studies confirmed: Alpha-GPC slows progression, enhancing daily function by 20-30% in vascular dementia. In Focus, AlphaSize® isn't reactive—it's preventive, empowering long-term brain vitality for sustained performance.

Mood: Steady the Emotional Compass

Foggy moods derail more workouts than bad form ever could. AlphaSize® stabilizes the emotional compass by modulating acetylcholine's interplay with dopamine and serotonin, curbing anxiety without sedation. Users report a "calm confidence"—no crashes, just equilibrium.

In a 2015 crossover trial, 200mg of AlphaSize® reduced jitteriness by 15% versus caffeine, while boosting vigor scores by 10%. This cholinergic balance fosters resilience, turning pre-gym nerves into focused drive. For Xendurance athletes, it's the difference between grinding through sets or thriving.

Memory and Focus: Sharpen the Mental Blade

Recall that game-changing play? AlphaSize® etches it deeper. By turbocharging acetylcholine in the hippocampus—the memory hub—it enhances encoding and retrieval. A 2024 RCT in young males showed that 600mg acute dosing spiked Stroop test scores by 18%, slashing cognitive interference. 

Focus? Razor-sharp. Serial subtraction tasks improve by 12% post-supplementation, per Examine.com's meta-review. In Alzheimer's cohorts, memory gains hit 25% over placebo. With Focus, you're not just remembering routines—you're innovating them.\

Caffeine Alternative: Clean Power, No Jitters

Ditch the buzz-and-crash cycle. AlphaSize® outperforms caffeine physiologically, delivering acetylcholine-driven alertness without adrenal overload. A 2015 study pitted 400mg AlphaSize® against 200mg caffeine: Alpha-GPC edged out in reaction time (8% faster) and hand-eye tasks, minus the anxiety spike. 

Caffeine blocks adenosine for short bursts; AlphaSize® builds sustainable neural highways. In cyclists, it extended time-to-exhaustion by 14% sans heart palpitations.  Focus users echo this: steady flow from dawn reps to dusk strategy sessions.

Mental and Physical Energy: Fuel the Dual Engine

Energy isn't just physical—it's the mental spark igniting every rep. AlphaSize® dual-fuels: mentally, via acetylcholine for unwavering drive; physically, by restoring post-exercise choline dips. A 2025 trial linked 300mg to 22% better sustained attention during fatigue. 

Physically, it amps up ATP recycling, delaying burnout. In resistance sessions, peak force rose 3.4%—translating to extra plates without fade. Xendurance Focus harnesses this synergy for all-day vigor.

Exercise Performance: Power Up the Gains

AlphaSize® turns workouts into breakthroughs. By enhancing neuromuscular transmission, it boosts contraction speed and endurance. A 2015 RCT found that 600mg pre-workout increased isometric mid-thigh pull force by 109N over placebo.

In power athletes, vertical jump power climbed 14%, according to a 2017 study.  For Xendurance, it's why Focus powers PRs: more reps, faster recovery, endless potential.

Human Growth Hormone Support: Amplify Recovery

HGH is the recovery kingpin, and AlphaSize® unlocks it. A 2008 crossover trial: 600mg 90min pre-resistance spiked post-exercise GH 44-fold (vs. 2.6-fold placebo), fueling muscle repair and fat loss.  At 1,000mg, it elevated basal GH by 290% in young adults.  In Focus, this translates to sculpted gains and rejuvenated tissues.

Hand-Eye Coordination (Gaming): Dominate the Digital Arena

Gamers, level up. AlphaSize® hones precision where milliseconds matter. A 2020 university RCT: 300mg daily for 7 days slashed VR game attempts by 13.8%, completing 25% more levels faster.  Reaction times dropped 9%, vigor trended up—ideal for esports marathons.

In a 2015 agility test, it outpaced caffeine for coordination. With 67% of Americans gaming, Focus with AlphaSize® is your unfair advantage. 

The Xendurance Edge: Commit to Excellence

Xendurance didn't choose AlphaSize® lightly—it's the culmination of science, safety, and results. In Focus, it synergizes with our clean formula for holistic elevation: sharper mind, stronger body, unbreakable spirit. Backed by GRAS assurance and 30+ years of trials, it's not a gamble—it's guaranteed progress.

Ready to focus like never before? Grab Xendurance Focus today and experience the AlphaSize® difference. Your next PB awaits.