Energy drink
Caffeine in Red Bull Sugarfree (8.4 oz)
80mg
per 8.4 oz
≈ 1 coffee≈ 1 Red Bull20% of FDA daily max
Is that a lot?
Red Bull Sugarfree (8.4 oz) is 20% of the FDA’s recommended daily maximum, in a single 8.4 oz.
Green tea
Espresso
Red Bull
Red Bull Sugarfree (8.4 oz)
Coffee
FDA daily max · 400mg
Before bed
When can I drink Red Bull Sugarfree (8.4 oz) and still sleep?
Your Red Bull Sugarfree (8.4 oz) cutoff
You drink it at
Bedtime
Red Bull Sugarfree (8.4 oz) · 80 mg · assuming an average ~5 h half-life
At bedtime
26 mg
close to optimal
Latest safe Red Bull Sugarfree (8.4 oz): 7:37 PM
How much caffeine is in Red Bull Sugarfree (8.4 oz)?
Red Bull Sugarfree matches the regular 8.4 oz can on caffeine at about 80 mg, simply dropping the sugar. You get the same coffee-strength lift in a small can, minus the 27 grams of sweetness.
| Serving | Caffeine | Sugar |
|---|---|---|
| 8.4 oz | 80 mg | 0 g |
Same caffeine as regular Red Bull; 12 oz ≈ 114 mg.
Will Red Bull Sugarfree (8.4 oz) affect your sleep?
At 80 mg, Red Bull Sugarfree takes around three hours to fall under 50 mg, so a mid-afternoon can is usually clear by bedtime. An evening can, though, may still be working when you try to sleep.
Source: Red Bull official