Mtn Dew Rise Energy has more caffeine than Pepsi on both counts: 180mg per 16 oz can against 38mg per 12 oz can, and about 11mg per fluid ounce against 3. 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.
Mtn Dew Rise Energy vs Pepsi: the numbers
| Mtn Dew Rise Energy | Pepsi | |
|---|---|---|
| Caffeine per serving | 180mg per 16 oz can | 38mg per 12 oz can |
| Caffeine per fl oz | 11.2mg | 3.2mg |
| Servings to reach 400mg (FDA context) | 2.2 | 10.5 |
Sources: Mtn Dew Rise Energy's figure is verified in our Mtn Dew Rise Energy caffeine guide against PepsiCo product facts (source); Pepsi's figure is verified in our Pepsi guide against Caffeine Informer (source).
The concentration gap is the striking part: Mtn Dew Rise Energy packs roughly 4 times the caffeine per ounce. Sipping speed matters at that density; a 16 oz can finished in minutes hits differently than the same milligrams spread over a slow cup.
Which one should you pick?
Pick Pepsi when you want the lighter dose or a slower ramp, and Mtn Dew Rise Energy 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
- Mtn Dew Rise Energy: the full caffeine guide
- Pepsi: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
FAQ
Does Mtn Dew Rise Energy or Pepsi have more caffeine? Mtn Dew Rise Energy: 180mg per 16 oz can versus 38mg per 12 oz can for Pepsi.
Which is stronger per ounce? Mtn Dew Rise Energy, at about 11.2mg per fluid ounce versus 3.2mg for Pepsi.
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