NutraBio PRE Stim-Free is engineered for athletes who want max performance without caffeine. Drive brutal pumps, elevated strength, and sharp training focus — all with zero stimulants.
With 10 grams of L-Citrulline, 3.2 grams Beta-Alanine, powerful nitrate technology, and nootropic support, it hits every strength system you rely on — oxygen delivery, muscle endurance, and neural connection. Electrolyte hydration keeps your output high deep into every session. And the label is 100% transparent — full clinical dosing and no proprietary blends. It’s pure, controlled power for lifters who don’t need caffeine to dominate.
Pump Matrix – 16 g
10 g L-Citrulline, performance nitrates (NO3-T®), and Arginine for elite vasodilation and endurance under heavy loads.
Strength Matrix – 8.3 g 3.2 g Beta-Alanine + Betaine Nitrate enhance power output, buffering fatigue so you keep stacking reps.
Nootropic & Focus Matrix – 2.9 g Alpha-GPC, Tyrosine, Velvet Bean (L-Dopa), and Vincamine sharpen neural drive and mind-muscle firing.
Electrolyte & Hydration Matrix – 714 mg Calci-K® + Sodium Phosphate maintain contraction strength and fluid balance throughout the session.
Absorption Enhancer AstraGin® improves uptake of key ingredients so every gram hits harder.
Strength Matrix – 8.3 g 3.2 g Beta-Alanine + Betaine Nitrate enhance power output, buffering fatigue so you keep stacking reps.
Nootropic & Focus Matrix – 2.9 g Alpha-GPC, Tyrosine, Velvet Bean (L-Dopa), and Vincamine sharpen neural drive and mind-muscle firing.
Electrolyte & Hydration Matrix – 714 mg Calci-K® + Sodium Phosphate maintain contraction strength and fluid balance throughout the session.
Absorption Enhancer AstraGin® improves uptake of key ingredients so every gram hits harder.
Mix 1 scoop with 10–12 oz cold water and take 20–30 minutes before training.
New users may start with ½ scoop to assess tingles from Beta-Alanine.
We carry NutraBio PRE Stim-Free because many athletes want total performance without relying on stimulants. This formula is clean, uncompromising, and built for those who train hard — whether it’s early morning, late nights, or double-day grind.
Q: Who is this best for?
A: Anyone wanting strong pumps and endurance without caffeine — evening athletes, caffeine-sensitive lifters, and stim-cycling pros.
Q: Does it still deliver focus? A: Yes — Alpha-GPC, Tyrosine, and Nootropic support keep your brain and body locked in.
Q: How many servings per container? A: 20 max-performance servings.
Q: Can this stack with a stim pre? A: Absolutely — stack a half scoop with your favorite caffeine source for fully customizable energy.
Q: Does it still deliver focus? A: Yes — Alpha-GPC, Tyrosine, and Nootropic support keep your brain and body locked in.
Q: How many servings per container? A: 20 max-performance servings.
Q: Can this stack with a stim pre? A: Absolutely — stack a half scoop with your favorite caffeine source for fully customizable energy.