Bare Knuckle Stim Free Review
- Elite pumps and performance scores
- Nearly every ingredient meets or exceeds clinical doses
- Genuinely strong focus for a stim-free formula
- Fully disclosed, no proprietary blends
- Caffeine-free, take it any time
- Very large serving size (41g)
- Only 20 servings per tub at full scoop
- No energy boost at all, by design
Effects Timeline
AI-estimated changes in effects over the first 3 hours after taking the recommended serving.
Bare Knuckle Stim Free is an exceptional formula — pumps and performance are both near the top of the scale, and focus is genuinely strong too, all without a single milligram of caffeine.
Almost every ingredient is dosed generously enough to actually work, which is rare even among caffeinated products.
One ingredient works through a different pump pathway than usual, giving your body more than one way to get the blood flowing.
Honest take: The best stim-free pre-workout in this catalog, though you're paying a real premium for it.
Bare Knuckle Stim Free Ingredient breakdown
| Ingredient | Clinically effective dose | Dose in Bare Knuckle Stim Free | Status |
|---|---|---|---|
| L-Citrulline | 4 g | 10 g | 100%Clinically effective |
| Beta Alanine | 4.5 g | 6.4 g | 100%Clinically effective |
| L-Tyrosine | 2–8 g | 6 g | 100%Clinically effective |
| Betaine Anhydrous | 2.5 g | 5 g | 100%Clinically effective |
| Arginine (from Arginine Nitrate) | 4 g | 3.1 g | 77%Moderate dose |
| Nitrates (from Arginine Nitrate) | 0.5 g | 1.1 g | 100%Clinically effective |
| Taurine | 2–3 g | 3 g | 100%Clinically effective |
| Alpha-GPC | 600 mg | 400–800 mg | 100%Clinically effective |
| Vaso-Drive AP (Casein Hydrolysate) | 508 mg | 508 mg | 100%Clinically effective |
| Sodium (from Himalayan Pink Salt) | 0.3–1 g | 0.2 g | Hydration support |
| Potassium (from Himalayan Pink Salt) | 100–400 mg | 50 mg | Hydration support |
| Grape Seed Extract (Vitis Vinifera) | 400 mg | 400 mg | 100%Clinically effective |
| AstraGin | Absorption enhancer, not a direct-effect ingredient | 50 mg | No evidence |
| Huperzine-A | 200 mcg | 400 mcg | 100%Clinically effective |
- L-Citrulline10 g100%Clinically effective
- Beta Alanine6.4 g100%Clinically effective
- L-Tyrosine6 g100%Clinically effective
- Betaine Anhydrous5 g100%Clinically effective
- Arginine (from Arginine Nitrate)3.1 g77%Moderate dose
- Nitrates (from Arginine Nitrate)1.1 g100%Clinically effective
- Taurine3 g100%Clinically effective
- Alpha-GPC400–800 mg100%Clinically effective
- Vaso-Drive AP (Casein Hydrolysate)508 mg100%Clinically effective
- Sodium (from Himalayan Pink Salt)200 mgHydration support
- Potassium (from Himalayan Pink Salt)50 mgHydration support
- Grape Seed Extract (Vitis Vinifera)400 mg100%Clinically effective
- AstraGin50 mgNo evidence
- Huperzine-A400 mcg100%Clinically effective
Evidence references
Effect of Beta-Alanine Supplementation on Maximal Intensity Exercise in Trained Young Male Individuals: A Systematic Review and Meta-Analysis
Alpha-GPC and power output
Tyrosine for Mitigating Stress and Enhancing Performance in Healthy Adult Humans, a Rapid Evidence Assessment of the Literature
Does One Shot Work? The Acute Impact of a Single Taurine Dose on Exercise Performance: A Meta-Analytic Review
