Dunkin Sparkd Energy (medium) vs C4 Performance Energy: which has more caffeine?

C4 Performance Energy has more caffeine than Dunkin Sparkd Energy (medium) on both counts: 200mg per 16 oz can against 144mg per 24 oz medium, and about 12mg per fluid ounce against 6. The serving sizes differ, so the table below shows both ways of counting.

Dunkin Sparkd Energy (medium) vs C4 Performance Energy: the numbers

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

Which one should you pick?

Pick Dunkin Sparkd Energy (medium) 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

• Dunkin Sparkd Energy (medium): the full caffeine guide
• C4 Performance Energy: the full caffeine guide
• The verified caffeine database
• Every drink compared: the comparisons index

FAQ

Does Dunkin Sparkd Energy (medium) or C4 Performance Energy have more caffeine? C4 Performance Energy: 200mg per 16 oz can versus 144mg per 24 oz medium for Dunkin Sparkd Energy (medium).

Which is stronger per ounce? C4 Performance Energy, at about 12.5mg per fluid ounce versus 6.0mg for Dunkin Sparkd Energy (medium).