Prime Energy has more caffeine than Bloom Energy: 200mg vs 180mg in the same 12 oz can. That is a 20mg gap, and since the cans match, the per-serving number is the whole story.
Bloom Energy vs Prime Energy: the numbers
| Bloom Energy | Prime Energy | |
|---|---|---|
| Caffeine per serving | 180mg per 12 oz can | 200mg per 12 oz can |
| Caffeine per fl oz | 15.0mg | 16.7mg |
| Servings to reach 400mg (FDA context) | 2.2 | 2.0 |
Sources: Bloom Energy's figure is verified in our Bloom Energy caffeine guide against Caffeine Informer (source); Prime Energy's figure is verified in our Prime Energy guide against Caffeine Informer (source).
Which one should you pick?
Pick Bloom 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
- Bloom 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 Bloom Energy or Prime Energy have more caffeine? Prime Energy: 200mg per 12 oz can versus 180mg per 12 oz can for Bloom Energy.
Which is stronger per ounce? Prime Energy, at about 16.7mg per fluid ounce versus 15.0mg for Bloom Energy.
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.