Sun Drop has more caffeine than Mountain Dew: 64mg vs 54mg in the same 12 oz can. That is a 10mg gap, and since the cans match, the per-serving number is the whole story.
Sun Drop vs Mountain Dew: the numbers
| Sun Drop | Mountain Dew | |
|---|---|---|
| Caffeine per serving | 64mg per 12 oz can | 54mg per 12 oz can |
| Caffeine per fl oz | 5.3mg | 4.5mg |
| Servings to reach 400mg (FDA context) | 6.2 | 7.4 |
Sources: Sun Drop's figure is verified in our Sun Drop caffeine guide against Caffeine Informer (source); Mountain Dew's figure is verified in our Mountain Dew guide against Caffeine Informer (source).
Which one should you pick?
Pick Mountain Dew when you want the lighter dose or a slower ramp, and Sun Drop 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
- Sun Drop: the full caffeine guide
- Mountain Dew: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
FAQ
Does Sun Drop or Mountain Dew have more caffeine? Sun Drop: 64mg per 12 oz can versus 54mg per 12 oz can for Mountain Dew.
Which is stronger per ounce? Sun Drop, at about 5.3mg per fluid ounce versus 4.5mg for Mountain Dew.
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.