Starbucks Tripleshot Energy vs Dunkin iced coffee (medium): which has more caffeine?

Dunkin iced coffee (medium) carries more total caffeine per serving (297mg per 24 oz medium vs 225mg per 15 oz can), but ounce for ounce Starbucks Tripleshot Energy is actually the stronger drink at about 15mg per fluid ounce against 12. Which one "has more caffeine" depends on whether you measure the container or the concentration.

Starbucks Tripleshot Energy vs Dunkin iced coffee (medium): the numbers

Sources: Starbucks Tripleshot Energy's figure is verified in our Starbucks Tripleshot Energy caffeine guide against Starbucks / 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 Starbucks Tripleshot Energy 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

• Starbucks Tripleshot Energy: 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 Starbucks Tripleshot Energy or Dunkin iced coffee (medium) have more caffeine? Dunkin iced coffee (medium): 297mg per 24 oz medium versus 225mg per 15 oz can for Starbucks Tripleshot Energy.

Which is stronger per ounce? Starbucks Tripleshot Energy, at about 15.0mg per fluid ounce versus 12.4mg for Dunkin iced coffee (medium).