Core Fury Black Pre Workout
vs El Jefe® Guerilla Sample Packet
Ingredient & Score Comparison
Last updated: Feb 2026
PwrRanks Verdict
Score Comparison
Objective scores based on ingredient dosing — 0 to 1 scale
Core Fury Black Pre Workout delivers more performance per dollar than El Jefe® Guerilla Sample Packet — based on how both products compare to the broader pre-workout market.
Ingredient Comparison
Core Fury Black vs El Jefe® Guerilla Sample Packet — dosing per serving
| Ingredient | Objective | Core Fury Black | El Jefe® Guerilla Sample Packet |
|---|---|---|---|
| Caffeine Yield | Energy | 400mg | 399mg |
| Theobromine | Energy | — | 400mg |
| Alpha Yohimbine | Energy | 2mg | 1mg |
| L-Citrulline | Pump | 10g | 8g |
| Betaine Anhydrous | Pump | 5g | 2g |
| Taurine | Pump | 2g | 2g |
| Arginine Nitrate | Pump | — | 2g |
| Casein Hydrolysate | Pump | — | 508mg |
| AstraGin | Pump | — | 50mg |
| L-Tyrosine | Focus | 3g | 3g |
| Alpha-GPC | Focus | — | 800mg |
| DMAE | Focus | — | 750mg |
| Citicoline | Focus | 250mg | — |
| Huperzine | Focus | 2mg | — |
| Beta-Alanine | - | 3.2g | 4g |
| Alpinina Galanga Extract | - | — | 300mg |
| VasoDrive-AP | - | 254mg | — |
| Methyliberine | - | 100mg | — |
| Synephrine HCl | - | 80mg | — |
Who Should Buy Each
Matching products to training goals and stim tolerance
Choose Core Fury Black If…
- ✓You want sharp mental focus that lasts through the full session
Choose El Jefe® Guerilla Sample Packet If…
- ✓Mind-muscle connection is as important to you as raw energy
Frequently Asked Questions
Common questions about these two pre-workouts
They're tied — both have 399mg total caffeine per serving.
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How PwrRanks Scores Pre-Workouts
Our methodology
PwrRanks scores every pre-workout by analyzing its ingredient label algorithmically. We generate four objective scores — Energy, Pump, Focus, and Value — that reflect what's in the tub, not how the product is marketed. Value scores are calculated using live pricing data to reflect real cost-per-serving at time of comparison.