SToK Extra Bold cold brew vs GURU Original: which has more caffeine?

SToK Extra Bold cold brew has more caffeine than GURU Original: 170mg vs 140mg in the same 12 oz serving. That is a 30mg 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.

SToK Extra Bold cold brew vs GURU Original: the numbers

Sources: SToK Extra Bold cold brew's figure is verified in our SToK Extra Bold cold brew caffeine guide against SToK FAQ (source); GURU Original's figure is verified in our GURU Original guide against Caffeine Informer (source).

Which one should you pick?

Pick GURU Original when you want the lighter dose or a slower ramp, and SToK Extra Bold cold brew 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

• SToK Extra Bold cold brew: the full caffeine guide
• GURU Original: the full caffeine guide
• The verified caffeine database
• Every drink compared: the comparisons index

FAQ

Does SToK Extra Bold cold brew or GURU Original have more caffeine? SToK Extra Bold cold brew: 170mg per 12 oz serving versus 140mg per 12 oz can for GURU Original.

Which is stronger per ounce? SToK Extra Bold cold brew, at about 14.2mg per fluid ounce versus 11.7mg for GURU Original.