Dunkin Refresher (medium) vs Dunkin Sparkd Energy (medium): which has more caffeine?

Dunkin Sparkd Energy (medium) has more caffeine than Dunkin Refresher (medium): 144mg vs 99mg in the same 24 oz medium. That is a 45mg gap, and since the cans match, the per-serving number is the whole story.

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.

Dunkin Refresher (medium) vs Dunkin Sparkd Energy (medium): the numbers

Sources: Dunkin Refresher (medium)'s figure is verified in our Dunkin Refresher (medium) caffeine guide against Tasting Table / Dunkin figures (source); Dunkin Sparkd Energy (medium)'s figure is verified in our Dunkin Sparkd Energy (medium) guide against Caffeine Informer Dunkin guide (source).

Which one should you pick?

Pick Dunkin Refresher (medium) when you want the lighter dose or a slower ramp, and Dunkin Sparkd Energy (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 Refresher (medium): the full caffeine guide
• Dunkin Sparkd Energy (medium): the full caffeine guide
• The verified caffeine database

FAQ

Does Dunkin Refresher (medium) or Dunkin Sparkd Energy (medium) have more caffeine? Dunkin Sparkd Energy (medium): 144mg per 24 oz medium versus 99mg per 24 oz medium for Dunkin Refresher (medium).

Which is stronger per ounce? Dunkin Sparkd Energy (medium), at about 6.0mg per fluid ounce versus 4.1mg for Dunkin Refresher (medium).