Rockstar Punched Fruit Punch (16oz) — caffeine content and your daily math
The chemical receipt for Rockstar Punched Fruit Punch: label caffeine, coffee equivalence, and what's still in you at bedtime.
| Fact | Value |
|---|---|
| Caffeine per can (label) | 240 mg |
| Can size | 16 fl oz |
| Caffeine per fl oz | 15.0 mg |
| ≈ cups of coffee (8oz drip) | 2.5 |
| Share of FDA 400mg/day guidance | 60% |
| Maker | PepsiCo |
What's still in you, hour by hour
| Time after drinking | Caffeine remaining (≈5h half-life) | |
|---|---|---|
| +2h | 182mg | |
| +4h | 138mg | |
| +6h | 104mg | late afternoon if consumed at lunch |
| +8h | 79mg | bedtime territory for most schedules |
| +10h | 60mg | bedtime territory for most schedules |
Run your own numbers with the caffeine half-life calculator.
Stacking: caffeine + nicotine
If you also use nicotine pouches, the two stimulants stack — both raise heart rate and both suppress appetite, and the combination on an empty stomach is the single most common "wired but fried" pattern SteadyBeast users log. A 240mg can plus a few 6mg pouches before lunch is a bigger nervous-system event than either alone. See the nicotine pouch database for the other half of your math.
FAQ
How much caffeine is in Rockstar Punched Fruit Punch?
Rockstar Punched Fruit Punch (16oz) contains 240mg of caffeine per the label — about 2.5 cups of 8oz drip coffee (~95mg each). Always confirm on your can; formulations change.
How long does the caffeine in Rockstar Punched Fruit Punch stay in your system?
Caffeine's average half-life is ~5 hours. From a 240mg can, roughly 120mg is still active 5 hours later and ~60mg after 10 hours — which is why an afternoon can shows up at bedtime.
Is 240mg of caffeine a lot?
The FDA cites 400mg/day as a level not generally associated with negative effects for healthy adults. One Rockstar Punched Fruit Punch is 60% of that — before any coffee, tea, soda, or pre-workout you also had.