Soda
Caffeine in Diet Dr Pepper
41mg
per 12 oz
≈ 1 Red Bull10% of FDA daily max
Is that a lot?
Diet Dr Pepper is 10% of the FDA’s recommended daily maximum, in a single 12 oz.
Green tea
Diet Dr Pepper
Espresso
Red Bull
Coffee
FDA daily max · 400mg
Before bed
When can I drink Diet Dr Pepper and still sleep?
Your Diet Dr Pepper cutoff
You drink it at
Bedtime
Diet Dr Pepper · 41 mg · assuming an average ~5 h half-life
At bedtime
14 mg
close to optimal
Latest safe Diet Dr Pepper: 11:00 PM
How much caffeine is in Diet Dr Pepper?
Diet Dr Pepper carries about 41 mg of caffeine in a 12 oz can, the same as the zero-sugar version, with no sugar. It's a mild caffeine source dressed in that signature blend of flavors.
| Serving | Caffeine | Sugar |
|---|---|---|
| 12 oz | 41 mg | 0 g |
Will Diet Dr Pepper affect your sleep?
At 41 mg, Diet Dr Pepper begins below the 50 mg threshold and clears within a couple of hours. An evening can rarely stands in the way of falling asleep.
Source: Manufacturer label