Prime Energy has more caffeine than Aspire Energy: 200mg vs 80mg in the same 12 oz can. That is a 120mg gap, and since the cans match, the per-serving number is the whole story.
Aspire Energy vs Prime Energy: the numbers
| Aspire Energy | Prime Energy | |
|---|---|---|
| Caffeine per serving | 80mg per 12 oz can | 200mg per 12 oz can |
| Caffeine per fl oz | 6.7mg | 16.7mg |
| Servings to reach 400mg (FDA context) | 5.0 | 2.0 |
Sources: Aspire Energy's figure is verified in our Aspire Energy caffeine guide against Aspire / Caffeine Informer (source); Prime Energy's figure is verified in our Prime Energy guide against Caffeine Informer (source).
Which one should you pick?
Pick Aspire Energy when you want the lighter dose or a slower ramp, and Prime 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
- Aspire Energy: the full caffeine guide
- Prime Energy: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
FAQ
Does Aspire Energy or Prime Energy have more caffeine? Prime Energy: 200mg per 12 oz can versus 80mg per 12 oz can for Aspire Energy.
Which is stronger per ounce? Prime Energy, at about 16.7mg per fluid ounce versus 6.7mg for Aspire Energy.
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