The chemical receipt for ZOA Strawberry Watermelon: label caffeine, coffee equivalence, and what's still in you at bedtime.
| Fact | Value |
|---|---|
| Caffeine per can (label) | 160 mg |
| Can size | 12 fl oz |
| Caffeine per fl oz | 13.3 mg |
| ≈ cups of coffee (8oz drip) | 1.7 |
| Share of FDA 400mg/day guidance | 40% |
| Maker | ZOA Energy (Dwayne Johnson) |
| Time after drinking | Caffeine remaining (≈5h half-life) | |
|---|---|---|
| +2h | 121mg | |
| +4h | 92mg | |
| +6h | 70mg | late afternoon if consumed at lunch |
| +8h | 53mg | bedtime territory for most schedules |
| +10h | 40mg | bedtime territory for most schedules |
Run your own numbers with the caffeine half-life calculator.
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 160mg 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.
How much caffeine is in ZOA Strawberry Watermelon?
ZOA Strawberry Watermelon (12oz) contains 160mg of caffeine per the label — about 1.7 cups of 8oz drip coffee (~95mg each). Always confirm on your can; formulations change.
How long does the caffeine in ZOA Strawberry Watermelon stay in your system?
Caffeine's average half-life is ~5 hours. From a 160mg can, roughly 80mg is still active 5 hours later and ~40mg after 10 hours — which is why an afternoon can shows up at bedtime.
Is 160mg of caffeine a lot?
The FDA cites 400mg/day as a level not generally associated with negative effects for healthy adults. One ZOA Strawberry Watermelon is 40% of that — before any coffee, tea, soda, or pre-workout you also had.