ProSupps
Dr. Jekyll Signature Stim-Free Review
Servings / container
30
Price per serving
$0.83
Cost per point
$0.44
per formula score point
Caffeine
0 mg
≈ 0 cups of coffee
Suggested dosing
Per dose
1 serving = 1 Scoop (9.83g)
Daily schedule
Take once daily
Strengths
- Genuinely caffeine-free
- Real adaptogen and cognitive ingredients included
- Simple, short formula
Watch-outs
- Most ingredients underdosed vs research
- Weak across every category
- Ginseng dose far below any tested amount
Effects Timeline
AI-estimated changes in effects over the first 3 hours after taking the recommended serving.
AI analysis
Dr.
Jekyll Signature Stim-Free is a light formula across the board -- nearly every ingredient sits meaningfully below its studied dose, including a cognitive-focused ingredient used at half the amount its own research tested.
Performance is the strongest category here, though still modest overall.
Best for: People who want a gentle, caffeine-free introduction to pre-workouts rather than a strong effect in any direction.
Ingredient breakdown
Every dose · every gap| Ingredient | Clinically effective dose | Dose in Dr. Jekyll Signature Stim-Free | Status |
|---|---|---|---|
| Beta Alanine | 4.5 g | 3.2 g | 71%Moderate dose |
| Creatine HCl | 3 g | 1.5 g | 50%Under-dosed |
| Inositol-Enhanced Arginine Silicate (nooLVL) | 1.6 g | 0.8 g | 50%Under-dosed |
| Choline Bitartrate | No dose shown to be effective | 450 mg | No evidence |
| L-Tyrosine | 2–8 g | 0.25 g | 13%Under-dosed |
| Panax ginseng Extract (stem and leaf) | 200–600 mg | 50 mg | 25%Under-dosed |
| Ashwagandha Extract (KSM-66) | 600 mg | 125 mg | 21%Under-dosed |
| Aframomum melegueta Extract (CaloriBurn GP) | N/A -- thermogenic/fat-oxidation ingredient, not scored in this category system | 30 mg | No evidence |
| Black Pepper Extract (Fruit) | Absorption enhancer, not a direct-effect ingredient | 5 mg | Absorption enhancer |
- Beta Alanine3.2 g71%Moderate dose
- Creatine HCl1.5 g50%Under-dosed
- Inositol-Enhanced Arginine Silicate (nooLVL)0.8 g50%Under-dosed
- Choline Bitartrate450 mgNo evidence
- L-Tyrosine0.25 g13%Under-dosed
- Panax ginseng Extract (stem and leaf)50 mg25%Under-dosed
- Ashwagandha Extract (KSM-66)125 mg21%Under-dosed
- Aframomum melegueta Extract (CaloriBurn GP)30 mgNo evidence
- Black Pepper Extract (Fruit)5 mgAbsorption enhancer
Evidence references
Int J Sport Nutr Exerc Metab · 2024 · n=331
Effect of Beta-Alanine Supplementation on Maximal Intensity Exercise in Trained Young Male Individuals: A Systematic Review and Meta-Analysis
Amino Acids · 2016 · n=360
Beta-alanine and carnosine loading
