C4 Sport (4th Gen) Review
- NSF certified for athletes
- Tested for banned substances & contaminants
- 30 servings per tub
- Low caffeine dose suits sensitive users
- Ingredient doses hidden in proprietary blends
- Very low scoring across the board
- Effective ingredients, but under-dosed
- Superior 5th Gen formula also exists
Effects Timeline
AI-estimated changes in effects over the first 3 hours after taking the recommended serving.
This is the older "4th Generation Legacy Series" version of C4 Sport, which is different from the newer 5th Generation formula.
It is NSF certified, which means it is independently tested for banned substances & contaminants.
Although it has more servings per container than the 5th Gen version, it hides its ingredient doses in proprietary blends and scores weaker across all categories.
It also has significantly less caffeine per serving at 135mg vs.
200mg for the 5th Gen formula.
Best for: Athletes that want a minor boost from an NSF certified pre-workout.
Ingredient breakdown
Every dose · every gap| Ingredient | Clinically effective dose | Dose in C4 Sport (4th Gen) | Status |
|---|---|---|---|
| Beta-Alanine | 4.5 g | 1.4 g | 31%Under-dosed |
| L-Arginine | 4 g | 0.9 g | 23%Under-dosed |
| Creatine HCl | 3 g | 0.48 g | 16%Under-dosed |
- Beta-Alanine1.4 g31%Under-dosed
- L-Arginine0.9 g23%Under-dosed
- Creatine HCl0.48 g16%Under-dosed
Evidence references
Does One Shot Work? The Acute Impact of a Single Taurine Dose on Exercise Performance: A Meta-Analytic Review
