Redline Xtreme has more caffeine than Mountain Dew on both counts: 316mg per 8 oz bottle against 54mg per 12 oz can, and about 40mg per fluid ounce against 4. 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.
Redline Xtreme vs Mountain Dew: the numbers
| Redline Xtreme | Mountain Dew | |
|---|---|---|
| Caffeine per serving | 316mg per 8 oz bottle | 54mg per 12 oz can |
| Caffeine per fl oz | 39.5mg | 4.5mg |
| Servings to reach 400mg (FDA context) | 1.3 | 7.4 |
Sources: Redline Xtreme's figure is verified in our Redline Xtreme caffeine guide against Caffeine Informer (source); Mountain Dew's figure is verified in our Mountain Dew guide against Caffeine Informer (source).
The concentration gap is the striking part: Redline Xtreme packs roughly 9 times the caffeine per ounce. Sipping speed matters at that density; a 8 oz bottle finished in minutes hits differently than the same milligrams spread over a slow cup.
Which one should you pick?
Pick Mountain Dew when you want the lighter dose or a slower ramp, and Redline Xtreme 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
- Redline Xtreme: the full caffeine guide
- Mountain Dew: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
FAQ
Does Redline Xtreme or Mountain Dew have more caffeine? Redline Xtreme: 316mg per 8 oz bottle versus 54mg per 12 oz can for Mountain Dew.
Which is stronger per ounce? Redline Xtreme, at about 39.5mg per fluid ounce versus 4.5mg for Mountain Dew.
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