Outwork Pre-Workout
vs Prime Labs Pre-Workout
Ingredient & Score Comparison
Last updated: Feb 2026
PwrRanks Verdict
Score Comparison
Objective scores based on ingredient dosing — 0 to 1 scale
Outwork Pre-Workout's formula has 6g L-Citrulline and 4g Taurine, which contribute to a higher pump score.
Prime Labs Pre-Workout delivers more performance per dollar than Outwork Pre-Workout — based on how both products compare to the broader pre-workout market.
Ingredient Comparison
Outwork vs Prime Labs — dosing per serving
| Ingredient | Objective | Outwork | Prime Labs |
|---|---|---|---|
| Caffeine Yield | Energy | 300mg | 253mg |
| Theobromine | Energy | — | 50mg |
| L-Citrulline | Pump | 6g | 4g |
| Taurine | Pump | 4g | 1g |
| Agmatine | Pump | — | 1g |
| Sodium | Pump | — | 200mg |
| Rhodiola Extract | Focus | 300mg | — |
| Beta-Alanine | - | 3.2g | 2g |
| Malic Acid | - | 1g | 2g |
| Green Tea Extract | - | — | 45mg |
| Naringin Extract | - | — | 20mg |
| Juniper Extract | - | — | 15mg |
| Black Pepper Extract | - | — | 5mg |
Who Should Buy Each
Matching products to training goals and stim tolerance
Choose Outwork If…
- ✓Pump and vascularity are a priority in your training
Choose Prime Labs If…
- ✓You want some pump support without it dominating the formula
Frequently Asked Questions
Common questions about these two pre-workouts
Outwork Pre-Workout has 300mg total caffeine per serving compared to 253mg in Prime Labs Pre-Workout.
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.