Celsius has more caffeine than GURU Original: 200mg vs 140mg in the same 12 oz can. That is a 60mg gap, and since the cans match, the per-serving number is the whole story.
Celsius vs GURU Original: the numbers
| Celsius | GURU Original | |
|---|---|---|
| Caffeine per serving | 200mg per 12 oz can | 140mg per 12 oz can |
| Caffeine per fl oz | 16.7mg | 11.7mg |
| Servings to reach 400mg (FDA context) | 2.0 | 2.9 |
Sources: Celsius's figure is verified in our Celsius caffeine guide against Celsius essential facts (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 Celsius 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
- Celsius: the full caffeine guide
- GURU Original: the full caffeine guide
- The verified caffeine database
FAQ
Does Celsius or GURU Original have more caffeine? Celsius: 200mg per 12 oz can versus 140mg per 12 oz can for GURU Original.
Which is stronger per ounce? Celsius, at about 16.7mg per fluid ounce versus 11.7mg for GURU Original.
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