Dunkin Sparkd Energy (medium) has more caffeine than English breakfast tea on both counts: 144mg per 24 oz medium against 47mg per 8 oz cup, and about 6mg per fluid ounce against 6. 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.
Dunkin Sparkd Energy (medium) vs English breakfast tea: the numbers
| Dunkin Sparkd Energy (medium) | English breakfast tea | |
|---|---|---|
| Caffeine per serving | 144mg per 24 oz medium | 47mg per 8 oz cup |
| Caffeine per fl oz | 6.0mg | 5.9mg |
| Servings to reach 400mg (FDA context) | 2.8 | 8.5 |
Sources: Dunkin Sparkd Energy (medium)'s figure is verified in our Dunkin Sparkd Energy (medium) caffeine guide against Caffeine Informer Dunkin guide (source); English breakfast tea's figure is verified in our English breakfast tea guide against Twinings published figure (source).
Which one should you pick?
Pick English breakfast tea 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 Sparkd Energy (medium): the full caffeine guide
- English breakfast tea: the full caffeine guide
- The verified caffeine database
FAQ
Does Dunkin Sparkd Energy (medium) or English breakfast tea have more caffeine? Dunkin Sparkd Energy (medium): 144mg per 24 oz medium versus 47mg per 8 oz cup for English breakfast tea.
Which is stronger per ounce? Dunkin Sparkd Energy (medium), at about 6.0mg per fluid ounce versus 5.9mg for English breakfast tea.
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.