Dr Pepper contains 42 mg of caffeine per 12 oz can (355 ml / 12 oz). That is about 44% of the caffeine in a typical 8 oz cup of brewed coffee (about 95 mg). Concentration: 11.8 mg per 100 ml.
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Dr Pepper Caffeine Content by Serving
Figures are for Dr Pepper (Keurig Dr Pepper).
| Serving | Volume | Caffeine | Per 100 ml | Level |
|---|---|---|---|---|
| 12 oz can | 355 ml / 12 oz | 42 mg | 11.8 mg | Low |
Source: caffeine figures from Caffeine Informer, accessed 2026-06-11. Values can vary by batch, location, and preparation; check the label or the source for the latest figures.
How Dr Pepper Compares to Coffee
At 42 mg per 12 oz can, Dr Pepper delivers about 44% of the caffeine in a typical 8 oz cup of brewed coffee (about 95 mg). For a wider comparison across drinks, try the caffeine comparison tool or browse the full caffeine database.
When to Stop Drinking Dr Pepper Before Bed
A 12 oz can of Dr Pepper (42 mg) stays under the 50 mg sleep-ready threshold from the first sip, so a normal serving is unlikely to delay sleep on its own. Multiple servings stack, though: caffeine's median half-life is about 5 hours, so a second or third serving in the afternoon can still add up past 50 mg by bedtime.
The Dr Pepper sleep cutoff page has last-call times for four bedtimes, and the caffeine half-life calculator personalizes the curve to your metabolism.
