Alani Nu has more caffeine than Monster Ultra (Zero Ultra) on both counts: 200mg per 12 oz can against 150mg per 16 oz can, and about 17mg per fluid ounce against 9. The serving sizes differ, so the table below shows both ways of counting.
Monster Ultra (Zero Ultra) vs Alani Nu: the numbers
| Monster Ultra (Zero Ultra) | Alani Nu | |
|---|---|---|
| Caffeine per serving | 150mg per 16 oz can | 200mg per 12 oz can |
| Caffeine per fl oz | 9.4mg | 16.7mg |
| Servings to reach 400mg (FDA context) | 2.7 | 2.0 |
Sources: Monster Ultra (Zero Ultra)'s figure is verified in our Monster Ultra (Zero Ultra) caffeine guide against Caffeine Informer (source); Alani Nu's figure is verified in our Alani Nu guide against Alani Nu label (source).
Which one should you pick?
Pick Monster Ultra (Zero Ultra) when you want the lighter dose or a slower ramp, and Alani Nu 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
- Monster Ultra (Zero Ultra): the full caffeine guide
- Alani Nu: 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 Monster Ultra (Zero Ultra) or Alani Nu have more caffeine? Alani Nu: 200mg per 12 oz can versus 150mg per 16 oz can for Monster Ultra (Zero Ultra).
Which is stronger per ounce? Alani Nu, at about 16.7mg per fluid ounce versus 9.4mg for Monster Ultra (Zero Ultra).
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