Dunkin iced coffee (medium) carries more total caffeine per serving (297mg per 24 oz medium vs 197mg per 13.7 oz bottle), but ounce for ounce Dunkin' Bottled Iced Coffee is actually the stronger drink at about 14mg per fluid ounce against 12. Which one "has more caffeine" depends on whether you measure the container or the concentration.
Dunkin' Bottled Iced Coffee vs Dunkin iced coffee (medium): the numbers
| Dunkin' Bottled Iced Coffee | Dunkin iced coffee (medium) | |
|---|---|---|
| Caffeine per serving | 197mg per 13.7 oz bottle | 297mg per 24 oz medium |
| Caffeine per fl oz | 14.4mg | 12.4mg |
| Servings to reach 400mg (FDA context) | 2.0 | 1.3 |
Sources: Dunkin' Bottled Iced Coffee's figure is verified in our Dunkin' Bottled Iced 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' Bottled Iced Coffee when you want the lighter dose or a slower ramp, and Dunkin iced coffee (medium) 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
- Dunkin' Bottled Iced 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
FAQ
Does Dunkin' Bottled Iced Coffee or Dunkin iced coffee (medium) have more caffeine? Dunkin iced coffee (medium): 297mg per 24 oz medium versus 197mg per 13.7 oz bottle for Dunkin' Bottled Iced Coffee.
Which is stronger per ounce? Dunkin' Bottled Iced Coffee, at about 14.4mg per fluid ounce versus 12.4mg for Dunkin iced coffee (medium).
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.