Energy drink
Caffeine in Rockstar Xdurance
300mg
per 16 oz
≈ 3 coffees≈ 4 Red Bulls75% of FDA daily max
Is that a lot?
Rockstar Xdurance is 75% of the FDA’s recommended daily maximum, in a single 16 oz.
Green tea
Espresso
Red Bull
Coffee
Rockstar Xdurance
FDA daily max · 400mg
Before bed
When can I drink Rockstar Xdurance and still sleep?
Your Rockstar Xdurance cutoff
You drink it at
Bedtime
Rockstar Xdurance · 300 mg · assuming an average ~5 h half-life
At bedtime
99 mg
may delay sleep
Latest safe Rockstar Xdurance: 10:05 AM
How much caffeine is in Rockstar Xdurance?
Rockstar Xdurance is the high-octane line, packing about 300 mg of caffeine into a 16 oz can. Sugar-free and built for endurance, it sits at the top of the energy-drink scale, roughly three coffees.
| Serving | Caffeine | Sugar |
|---|---|---|
| 16 oz | 300 mg | 0 g |
High-caffeine Rockstar line.
Will Rockstar Xdurance affect your sleep?
From 300 mg, Xdurance needs about fifteen hours to fall under 50 mg, so even a midday can can still be present at bedtime. This is a morning or pre-workout drink, not an evening one.
Heads up
At 300 mg, a second Rockstar Xdurance in a day pushes you toward the FDA’s 400 mg ceiling — and that’s before any coffee or tea. Log everything in the calculator to see your real daily total.
Source: Manufacturer label