Rockstar Recovery vs C4 Performance Energy: which has more caffeine?

C4 Performance Energy has more caffeine than Rockstar Recovery: 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.

Rockstar Recovery vs C4 Performance Energy: the numbers

Sources: Rockstar Recovery's figure is verified in our Rockstar Recovery caffeine guide against Caffeine Informer (source); C4 Performance Energy's figure is verified in our C4 Performance Energy guide against Caffeine Informer (source).

Which one should you pick?

Pick Rockstar Recovery 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

• Rockstar Recovery: the full caffeine guide
• C4 Performance Energy: the full caffeine guide
• The verified caffeine database
• Every drink compared: the comparisons index
• Compare any two of 120+ drinks

FAQ

Does Rockstar Recovery or C4 Performance Energy have more caffeine? C4 Performance Energy: 200mg per 16 oz can versus 160mg per 16 oz can for Rockstar Recovery.

Which is stronger per ounce? C4 Performance Energy, at about 12.5mg per fluid ounce versus 10.0mg for Rockstar Recovery.