Prime Labs Pre-Workout
vs Samurai X Pre Workout
Ingredient & Score Comparison
Last updated: Feb 2026
PwrRanks Verdict
Score Comparison
Objective scores based on ingredient dosing — 0 to 1 scale
Samurai X Pre Workout's formula has 600mg Theobromine and 350mg Eria Jarensis, which contribute to a higher energy score.
Samurai X Pre Workout's formula has 9g L-Citrulline and 5g Betaine Anhydrous, which contribute to a higher pump score.
Samurai X Pre Workout's formula has 2g L-Tyrosine and 600mg Alpha-GPC, which contribute to a higher focus score.
Prime Labs Pre-Workout delivers more performance per dollar than Samurai X Pre Workout — based on how both products compare to the broader pre-workout market.
Ingredient Comparison
Prime Labs vs Samurai X — dosing per serving
| Ingredient | Objective | Prime Labs | Samurai X |
|---|---|---|---|
| Theobromine | Energy | 50mg | 600mg |
| Eria Jarensis | Energy | — | 350mg |
| Caffeine Yield | Energy | 253mg | 250mg |
| L-Citrulline | Pump | 4g | 9g |
| Betaine Anhydrous | Pump | — | 5g |
| Agmatine | Pump | 1g | 1g |
| Taurine | Pump | 1g | — |
| Sodium | Pump | 200mg | 250mg |
| L-Tyrosine | Focus | — | 2g |
| Alpha-GPC | Focus | — | 600mg |
| Lion's Mane Extract | Focus | — | 500mg |
| Huperzine | Focus | — | 200mcg |
| Beta-Alanine | - | 2g | 3.2g |
| Malic Acid | - | 2g | — |
| VasoDrive-AP | - | — | 508mg |
| Catuaba | - | — | 350mg |
| English Ivy Extract | - | — | 300mg |
| Black Ginger Extract | - | — | 100mg |
| Paraxanthine | - | — | 100mg |
| Halostachine | - | — | 50mg |
| Green Tea Extract | - | 45mg | — |
| Naringin Extract | - | 20mg | — |
| Juniper Extract | - | 15mg | — |
| Black Pepper Extract | - | 5mg | 10mg |
| Pregnenolone | - | — | 5mg |
| Vitamin B6 | - | — | 2mg |
Who Should Buy Each
Matching products to training goals and stim tolerance
Choose Prime Labs If…
- ✓You want some pump support without it dominating the formula
Choose Samurai X If…
- ✓You want euphoric, mood-elevating formula
- ✓You want sharp mental focus that lasts through the full session
- ✓Mind-muscle connection is as important to you as raw energy
- ✓Pump and vascularity are a priority in your training
Frequently Asked Questions
Common questions about these two pre-workouts
They're tied — both have 251mg total caffeine per serving.
More Comparisons
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.