V8 +Energy has more caffeine than brewed green tea: 80mg vs 28mg in the same 8 oz can. That is a 52mg gap, and since the cans match, the per-serving number is the whole story.
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.
V8 +Energy vs brewed green tea: the numbers
| V8 +Energy | brewed green tea | |
|---|---|---|
| Caffeine per serving | 80mg per 8 oz can | 28mg per 8 oz cup |
| Caffeine per fl oz | 10.0mg | 3.5mg |
| Servings to reach 400mg (FDA context) | 5.0 | 14.3 |
Sources: V8 +Energy's figure is verified in our V8 +Energy caffeine guide against Campbell's / Caffeine Informer (source); brewed green tea's figure is verified in our brewed green tea guide against USDA FoodData Central (source).
Which one should you pick?
Pick brewed green tea when you want the lighter dose or a slower ramp, and V8 +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
- V8 +Energy: the full caffeine guide
- brewed green tea: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
FAQ
Does V8 +Energy or brewed green tea have more caffeine? V8 +Energy: 80mg per 8 oz can versus 28mg per 8 oz cup for brewed green tea.
Which is stronger per ounce? V8 +Energy, at about 10.0mg per fluid ounce versus 3.5mg for brewed green tea.
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