Stumptown Cold Brew (stubbie) has more caffeine than Prime Energy on both counts: 279mg per 10.5 oz bottle against 200mg per 12 oz can, and about 27mg per fluid ounce against 17. The serving sizes differ, so the table below shows both ways of counting.
These are different categories of drink, which changes how the caffeine arrives. Energy drinks and sodas list an exact number because caffeine is a measured additive; brewed drinks vary with the beans and the brew, so their figures are compiled averages. The numbers here are the standard published values for each.
Stumptown Cold Brew (stubbie) vs Prime Energy: the numbers
| Stumptown Cold Brew (stubbie) | Prime Energy | |
|---|---|---|
| Caffeine per serving | 279mg per 10.5 oz bottle | 200mg per 12 oz can |
| Caffeine per fl oz | 26.6mg | 16.7mg |
| Servings to reach 400mg (FDA context) | 1.4 | 2.0 |
Sources: Stumptown Cold Brew (stubbie)'s figure is verified in our Stumptown Cold Brew (stubbie) caffeine guide against Caffeine Informer (source); Prime Energy's figure is verified in our Prime Energy guide against Caffeine Informer (source).
Which one should you pick?
Pick Prime Energy when you want the lighter dose or a slower ramp, and Stumptown Cold Brew (stubbie) when you actually need the bigger hit and know your tolerance. If you are stacking either with other caffeinated drinks through the day, run the math against the 400mg reference rather than guessing.
For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. Tolerance and health vary, so treat these numbers as information, not advice.
Related reading
- Stumptown Cold Brew (stubbie): the full caffeine guide
- Prime Energy: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
FAQ
Does Stumptown Cold Brew (stubbie) or Prime Energy have more caffeine? Stumptown Cold Brew (stubbie): 279mg per 10.5 oz bottle versus 200mg per 12 oz can for Prime Energy.
Which is stronger per ounce? Stumptown Cold Brew (stubbie), at about 26.6mg per fluid ounce versus 16.7mg for Prime Energy.
Comparing caffeine? The caffeine comparison tool puts hundreds of drinks side by side, and the caffeine curfew calculator can check your cutoff time for tonight.