Dunkin iced coffee (medium) has more caffeine than Guayaki Yerba Mate (can) on both counts: 297mg per 24 oz medium against 150mg per 15.5 oz can, and about 12mg per fluid ounce against 10. 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.
Guayaki Yerba Mate (can) vs Dunkin iced coffee (medium): the numbers
| Guayaki Yerba Mate (can) | Dunkin iced coffee (medium) | |
|---|---|---|
| Caffeine per serving | 150mg per 15.5 oz can | 297mg per 24 oz medium |
| Caffeine per fl oz | 9.7mg | 12.4mg |
| Servings to reach 400mg (FDA context) | 2.7 | 1.3 |
Sources: Guayaki Yerba Mate (can)'s figure is verified in our Guayaki Yerba Mate (can) caffeine guide against Guayaki product page (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 Guayaki Yerba Mate (can) 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
- Guayaki Yerba Mate (can): 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 Guayaki Yerba Mate (can) or Dunkin iced coffee (medium) have more caffeine? Dunkin iced coffee (medium): 297mg per 24 oz medium versus 150mg per 15.5 oz can for Guayaki Yerba Mate (can).
Which is stronger per ounce? Dunkin iced coffee (medium), at about 12.4mg per fluid ounce versus 9.7mg for Guayaki Yerba Mate (can).
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