Redline Xtreme has more caffeine than Celsius on both counts: 316mg per 8 oz bottle against 200mg per 12 oz can, and about 40mg per fluid ounce against 17. The serving sizes differ, so the table below shows both ways of counting.
Redline Xtreme vs Celsius: the numbers
| Redline Xtreme | Celsius | |
|---|---|---|
| Caffeine per serving | 316mg per 8 oz bottle | 200mg per 12 oz can |
| Caffeine per fl oz | 39.5mg | 16.7mg |
| Servings to reach 400mg (FDA context) | 1.3 | 2.0 |
Sources: Redline Xtreme's figure is verified in our Redline Xtreme caffeine guide against Caffeine Informer (source); Celsius's figure is verified in our Celsius guide against Celsius essential facts (source).
Which one should you pick?
Pick Celsius when you want the lighter dose or a slower ramp, and Redline Xtreme 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
- Redline Xtreme: the full caffeine guide
- Celsius: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
FAQ
Does Redline Xtreme or Celsius have more caffeine? Redline Xtreme: 316mg per 8 oz bottle versus 200mg per 12 oz can for Celsius.
Which is stronger per ounce? Redline Xtreme, at about 39.5mg per fluid ounce versus 16.7mg for Celsius.
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