RISE Nitro Cold Brew (Original Black) has more caffeine than Rockstar Original on both counts: 180mg per 7 oz can against 160mg per 16 oz can, and about 26mg per fluid ounce against 10. The serving sizes differ, so the table below shows both ways of counting.
These are different categories of drink, which changes how the caffeine arrives. Energy drinks and sodas list an exact number because caffeine is a measured additive; brewed drinks vary with the beans and the brew, so their figures are compiled averages. The numbers here are the standard published values for each.
Rockstar Original vs RISE Nitro Cold Brew (Original Black): the numbers
| Rockstar Original | RISE Nitro Cold Brew (Original Black) | |
|---|---|---|
| Caffeine per serving | 160mg per 16 oz can | 180mg per 7 oz can |
| Caffeine per fl oz | 10.0mg | 25.7mg |
| Servings to reach 400mg (FDA context) | 2.5 | 2.2 |
Sources: Rockstar Original's figure is verified in our Rockstar Original caffeine guide against Rockstar product page (source); RISE Nitro Cold Brew (Original Black)'s figure is verified in our RISE Nitro Cold Brew (Original Black) guide against RISE product page (source).
Which one should you pick?
Pick Rockstar Original when you want the lighter dose or a slower ramp, and RISE Nitro Cold Brew (Original Black) 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
- Rockstar Original: the full caffeine guide
- RISE Nitro Cold Brew (Original Black): the full caffeine guide
- The verified caffeine database
FAQ
Does Rockstar Original or RISE Nitro Cold Brew (Original Black) have more caffeine? RISE Nitro Cold Brew (Original Black): 180mg per 7 oz can versus 160mg per 16 oz can for Rockstar Original.
Which is stronger per ounce? RISE Nitro Cold Brew (Original Black), at about 25.7mg per fluid ounce versus 10.0mg for Rockstar Original.
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.