C4 Performance Energy has more caffeine than NOS Energy: 200mg vs 160mg in the same 16 oz can. That is a 40mg gap, and since the cans match, the per-serving number is the whole story.
C4 Performance Energy vs NOS Energy: the numbers
| C4 Performance Energy | NOS Energy | |
|---|---|---|
| Caffeine per serving | 200mg per 16 oz can | 160mg per 16 oz can |
| Caffeine per fl oz | 12.5mg | 10.0mg |
| Servings to reach 400mg (FDA context) | 2.0 | 2.5 |
Sources: C4 Performance Energy's figure is verified in our C4 Performance Energy caffeine guide against Caffeine Informer (source); NOS Energy's figure is verified in our NOS Energy guide against Caffeine Informer (source).
Which one should you pick?
Pick NOS Energy when you want the lighter dose or a slower ramp, and C4 Performance Energy when you actually need the bigger hit and know your tolerance. If you are stacking either with other caffeinated drinks through the day, run the math against the 400mg reference rather than guessing.
For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. Tolerance and health vary, so treat these numbers as information, not advice.
Related reading
- C4 Performance Energy: the full caffeine guide
- NOS Energy: the full caffeine guide
- The verified caffeine database
FAQ
Does C4 Performance Energy or NOS Energy have more caffeine? C4 Performance Energy: 200mg per 16 oz can versus 160mg per 16 oz can for NOS Energy.
Which is stronger per ounce? C4 Performance Energy, at about 12.5mg per fluid ounce versus 10.0mg for NOS Energy.
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