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ZOA Strawberry Watermelon (12oz) — caffeine content and your daily math

The chemical receipt for ZOA Strawberry Watermelon: label caffeine, coffee equivalence, and what's still in you at bedtime.

FactValue
Caffeine per can (label)160 mg
Can size12 fl oz
Caffeine per fl oz13.3 mg
≈ cups of coffee (8oz drip)1.7
Share of FDA 400mg/day guidance40%
MakerZOA Energy (Dwayne Johnson)
At 160mg, one ZOA Strawberry Watermelon is roughly 1.7 cups of coffee in one sitting — half the FDA's 400mg daily guidance in a single can. It's a deliberate dose, not a beverage. The second can is where most people cross the line without noticing.

What's still in you, hour by hour

Time after drinkingCaffeine remaining (≈5h half-life)
+2h121mg
+4h92mg
+6h70mglate afternoon if consumed at lunch
+8h53mgbedtime territory for most schedules
+10h40mgbedtime 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 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.

See your whole stimulant picture. SteadyBeast tracks caffeine alongside nicotine, food, sleep, and mood — scans any can with your camera — and its AI coach knows how they stack. Get early access

FAQ

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.

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Educational information only — not medical advice, and not an endorsement of any product. Nicotine is addictive. Values reflect manufacturer label information ("label mg"), which describes nicotine content per pouch; absorbed amounts vary by person and use. Lineups change — always confirm the printed strength on your package. SteadyBeast is a coaching and self-tracking tool, not medical care. If you're in crisis, call or text 988.