PRE Stim Free Review
- Strong pumps and strength, zero stimulants
- Citrulline dosed above typical amounts
- No proprietary blends
- Focus is light next to pumps
- Some doses are combined salt forms
- One ingredient's potency isn't disclosed
Effects Timeline
AI-estimated changes in effects over the first 3 hours after taking the recommended serving.
PRE Stim Free leans almost entirely into pumps and strength, and delivers on both — this is a heavily, often maximally dosed formula with no proprietary blends anywhere.
Focus support is present but modest, built around a smaller stack than the pump and strength side gets.
Worth knowing: some ingredients are delivered as combined salt forms, so their listed weight isn't all one active compound.
Honest take: A genuinely powerful stim-free option, if a premium price for pumps and strength alone.
Ingredient breakdown
Every dose · every gap| Ingredient | Clinically effective dose | Dose in PRE Stim Free | Status |
|---|---|---|---|
| L-Citrulline | 4 g | 10 g | 100%Clinically effective |
| Arginine (combined from Arginine Nitrate, AAKG, and plain L-Arginine) | 4 g | 3.52 g | 88%Almost clinically effective |
| Nitrates (from Arginine Nitrate and Betaine Nitrate) | 0.5 g | 1.03 g | 100%Clinically effective |
| Beta Alanine | 4.5 g | 3.2 g | 71%Moderate dose |
| Betaine | 2.5 g | 2.5 g | 100%Clinically effective |
| Taurine | 2–3 g | 2 g | 100%Clinically effective |
| L-Tyrosine | 2–8 g | 1.5 g | 75%Moderate dose |
| Alpha-GPC | 600 mg | 300–600 mg | 100%Clinically effective |
| Choline Bitartrate | No dose shown to be effective | 550 mg | No evidence |
| Velvet Bean Extract | 5 g | 0.25 g | 5%Under-dosed |
| Vincamine | 20 mg | 20 mg | 100%Clinically effective |
- L-Citrulline10 g100%Clinically effective
- Arginine (combined from Arginine Nitrate, AAKG, and plain L-Arginine)3.52 g88%Almost clinically effective
- Nitrates (from Arginine Nitrate and Betaine Nitrate)1.03 g100%Clinically effective
- Beta Alanine3.2 g71%Moderate dose
- Betaine2.5 g100%Clinically effective
- Taurine2 g100%Clinically effective
- L-Tyrosine1.5 g75%Moderate dose
- Alpha-GPC300–600 mg100%Clinically effective
- Choline Bitartrate550 mgNo evidence
- Velvet Bean Extract0.25 g5%Under-dosed
- Vincamine20 mg100%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
