Caribou brewed coffee has more caffeine than Dunkin iced coffee (medium) on both counts: 305mg per 16 oz cup against 297mg per 24 oz medium, and about 19mg per fluid ounce against 12. The serving sizes differ, so the table below shows both ways of counting.
Caribou brewed coffee vs Dunkin iced coffee (medium): the numbers
| Caribou brewed coffee | Dunkin iced coffee (medium) | |
|---|---|---|
| Caffeine per serving | 305mg per 16 oz cup | 297mg per 24 oz medium |
| Caffeine per fl oz | 19.1mg | 12.4mg |
| Servings to reach 400mg (FDA context) | 1.3 | 1.3 |
Sources: Caribou brewed coffee's figure is verified in our Caribou brewed coffee caffeine guide against Caffeine Informer (source); Dunkin iced coffee (medium)'s figure is verified in our Dunkin iced coffee (medium) guide against Caffeine Informer Dunkin guide (source).
Which one should you pick?
Pick Dunkin iced coffee (medium) when you want the lighter dose or a slower ramp, and Caribou brewed coffee 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
- Caribou brewed coffee: the full caffeine guide
- Dunkin iced coffee (medium): the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
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Gear from this guide
FAQ
Does Caribou brewed coffee or Dunkin iced coffee (medium) have more caffeine? Caribou brewed coffee: 305mg per 16 oz cup versus 297mg per 24 oz medium for Dunkin iced coffee (medium).
Which is stronger per ounce? Caribou brewed coffee, at about 19.1mg per fluid ounce versus 12.4mg for Dunkin iced coffee (medium).
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