C4 Ultimate Strength 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
C4 Ultimate Strength Pre-Workout's formula has 300mg Caffeine Yield and 10mg Theacrine, which contribute to a higher energy score.
C4 Ultimate Strength Pre-Workout's formula has 1g L-Tyrosine and 5mg Huperzine, which contribute to a higher focus score.
Prime Labs Pre-Workout delivers more performance per dollar than C4 Ultimate Strength Pre-Workout — based on how both products compare to the broader pre-workout market.
Ingredient Comparison
C4 Ultimate Strength vs Prime Labs — dosing per serving
| Ingredient | Objective | C4 Ultimate Strength | Prime Labs |
|---|---|---|---|
| Caffeine Yield | Energy | 300mg | 253mg |
| Theobromine | Energy | — | 50mg |
| Theacrine | Energy | 10mg | — |
| Alpha Yohimbine | Energy | 1mg | — |
| L-Citrulline | Pump | 3g | 4g |
| Betaine Anhydrous | Pump | 1.3g | — |
| Agmatine | Pump | — | 1g |
| Taurine | Pump | — | 1g |
| Sodium | Pump | — | 200mg |
| L-Tyrosine | Focus | 1g | — |
| Huperzine | Focus | 5mg | — |
| Creatine Monohydrate | - | 4g | — |
| Beta-Alanine | - | 3.2g | 2g |
| L-Arginine | - | 3g | — |
| PeptiStrong Bioactive Fava Bean Peptides | - | 2.4g | — |
| Malic Acid | - | — | 2g |
| Creatine Nitrate | - | 1.5g | — |
| PeptiPump Bioactive Lentil Peptides | - | 200mg | — |
| ElevATP | - | 150mg | — |
| Dynamine | - | 50mg | — |
| 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 C4 Ultimate Strength If…
- ✓You respond well to alpha-yohimbine
- ✓You want sharp mental focus that lasts through the full session
Choose Prime Labs If…
- No strong differentiators for this product in this comparison.
Frequently Asked Questions
Common questions about these two pre-workouts
C4 Ultimate Strength 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.