English breakfast tea vs GURU Original: which has more caffeine?

GURU Original has more caffeine than English breakfast tea on both counts: 140mg per 12 oz can against 47mg per 8 oz cup, and about 12mg 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.

English breakfast tea vs GURU Original: the numbers

Sources: English breakfast tea's figure is verified in our English breakfast tea caffeine guide against Twinings published figure (source); GURU Original's figure is verified in our GURU Original guide against Caffeine Informer (source).

Which one should you pick?

Pick English breakfast tea when you want the lighter dose or a slower ramp, and GURU Original 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

• English breakfast tea: the full caffeine guide
• GURU Original: the full caffeine guide
• The verified caffeine database
• Every drink compared: the comparisons index

FAQ

Does English breakfast tea or GURU Original have more caffeine? GURU Original: 140mg per 12 oz can versus 47mg per 8 oz cup for English breakfast tea.

Which is stronger per ounce? GURU Original, at about 11.7mg per fluid ounce versus 5.9mg for English breakfast tea.