5-hour Energy (regular) has more caffeine than Bloom Energy on both counts: 200mg per 1.93 oz shot against 180mg per 12 oz can, and about 104mg per fluid ounce against 15. The serving sizes differ, so the table below shows both ways of counting.
Bloom Energy vs 5-hour Energy (regular): the numbers
| Bloom Energy | 5-hour Energy (regular) | |
|---|---|---|
| Caffeine per serving | 180mg per 12 oz can | 200mg per 1.93 oz shot |
| Caffeine per fl oz | 15.0mg | 103.6mg |
| 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); 5-hour Energy (regular)'s figure is verified in our 5-hour Energy (regular) guide against 5-hour Energy facts page (source).
The concentration gap is the striking part: 5-hour Energy (regular) packs roughly 7 times the caffeine per ounce. Sipping speed matters at that density; a 1.93 oz shot finished in minutes hits differently than the same milligrams spread over a slow cup.
Which one should you pick?
Pick Bloom Energy when you want the lighter dose or a slower ramp, and 5-hour Energy (regular) 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
- 5-hour Energy (regular): the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
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Gear from this guide
FAQ
Does Bloom Energy or 5-hour Energy (regular) have more caffeine? 5-hour Energy (regular): 200mg per 1.93 oz shot versus 180mg per 12 oz can for Bloom Energy.
Which is stronger per ounce? 5-hour Energy (regular), at about 103.6mg 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.
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