UPTIME Energy has more caffeine than GURU Original: 142mg vs 140mg in the same 12 oz can. That is a 2mg gap, and since the cans match, the per-serving number is the whole story.
GURU Original vs UPTIME Energy: the numbers
| GURU Original | UPTIME Energy | |
|---|---|---|
| Caffeine per serving | 140mg per 12 oz can | 142mg per 12 oz can |
| Caffeine per fl oz | 11.7mg | 11.8mg |
| Servings to reach 400mg (FDA context) | 2.9 | 2.8 |
Sources: GURU Original's figure is verified in our GURU Original caffeine guide against Caffeine Informer (source); UPTIME Energy's figure is verified in our UPTIME Energy guide against Caffeine Informer (source).
Which one should you pick?
Pick GURU Original when you want the lighter dose or a slower ramp, and UPTIME Energy 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
- GURU Original: the full caffeine guide
- UPTIME Energy: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
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FAQ
Does GURU Original or UPTIME Energy have more caffeine? UPTIME Energy: 142mg per 12 oz can versus 140mg per 12 oz can for GURU Original.
Which is stronger per ounce? UPTIME Energy, at about 11.8mg per fluid ounce versus 11.7mg for GURU Original.
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.
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