C4 Ultimate Pre-Workout
vs Kill Switch 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 Pre-Workout's formula has 300mg Caffeine Yield and 10mg Theacrine, which contribute to a higher energy score.
C4 Ultimate Pre-Workout's formula has 3g L-Citrulline and 1.3g Betaine Anhydrous, which contribute to a higher pump score.
C4 Ultimate Pre-Workout's formula has 1g L-Tyrosine and 5mg Huperzine, which contribute to a higher focus score.
C4 Ultimate Pre-Workout delivers more performance per dollar than Kill Switch Pre Workout — based on how both products compare to the broader pre-workout market.
Ingredient Comparison
C4 Ultimate vs Kill Switch — dosing per serving
| Ingredient | Objective | C4 Ultimate | Kill Switch |
|---|---|---|---|
| Caffeine Yield | Energy | 300mg | 300mg |
| DMAA | Energy | — | 115mg |
| Theacrine | Energy | 10mg | — |
| Alpha Yohimbine | Energy | 1mg | — |
| L-Citrulline | Pump | 3g | — |
| Agmatine | Pump | — | 1.5g |
| Betaine Anhydrous | Pump | 1.3g | — |
| L-Tyrosine | Focus | 1g | — |
| Alpha-GPC | Focus | — | 600mg |
| Huperzine | Focus | 5mg | — |
| Beta-Alanine | - | 3.2g | 3.2g |
| L-Arginine | - | 3g | — |
| Creatine Nitrate | - | 1.5g | — |
| L-Norvaline | - | — | 500mg |
| PetiPump Bioactive Lentil Peptides | - | 200mg | — |
| Dynamine | - | 50mg | — |
| Hordenine | - | — | 50mg |
| Synephrine HCl | - | — | 30mg |
| Juniper Extract | - | — | 30mg |
| Ephedra Extract | - | — | 25mg |
Who Should Buy Each
Matching products to training goals and stim tolerance
Choose C4 Ultimate If…
- ✓You respond well to alpha-yohimbine
- ✓You want sharp mental focus that lasts through the full session
- ✓You want some pump support without it dominating the formula
Choose Kill Switch If…
- ✓You want a powerful pre-workout and are comfortable using it 2–3 times per week max
- ✓Mind-muscle connection is as important to you as raw energy
- ✓You want a pure stimulant experience — energy and focus over pump
Frequently Asked Questions
Common questions about these two pre-workouts
They're tied — both have 300mg 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.