C4 Performance Energy has more caffeine than Bubly Bounce caffeinated sparkling water on both counts: 200mg per 16 oz can against 35mg per 12 oz can, and about 12mg per fluid ounce against 3. The serving sizes differ, so the table below shows both ways of counting.
Bubly Bounce caffeinated sparkling water vs C4 Performance Energy: the numbers
| Bubly Bounce caffeinated sparkling water | C4 Performance Energy | |
|---|---|---|
| Caffeine per serving | 35mg per 12 oz can | 200mg per 16 oz can |
| Caffeine per fl oz | 2.9mg | 12.5mg |
| Servings to reach 400mg (FDA context) | 11.4 | 2.0 |
Sources: Bubly Bounce caffeinated sparkling water's figure is verified in our Bubly Bounce caffeinated sparkling water caffeine guide against Caffeine Informer (source); C4 Performance Energy's figure is verified in our C4 Performance Energy guide against Caffeine Informer (source).
The concentration gap is the striking part: C4 Performance Energy packs roughly 4 times the caffeine per ounce. Sipping speed matters at that density; a 16 oz can finished in minutes hits differently than the same milligrams spread over a slow cup.
Which one should you pick?
Pick Bubly Bounce caffeinated sparkling water 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
- Bubly Bounce caffeinated sparkling water: 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
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Gear from this guide
FAQ
Does Bubly Bounce caffeinated sparkling water or C4 Performance Energy have more caffeine? C4 Performance Energy: 200mg per 16 oz can versus 35mg per 12 oz can for Bubly Bounce caffeinated sparkling water.
Which is stronger per ounce? C4 Performance Energy, at about 12.5mg per fluid ounce versus 2.9mg for Bubly Bounce caffeinated sparkling water.
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