Monster carries more total caffeine per serving (160mg per 16 oz can vs 80mg per 8 oz can), but ounce for ounce V8 +Energy is actually the stronger drink at about 10mg per fluid ounce against 10. Which one "has more caffeine" depends on whether you measure the container or the concentration.
V8 +Energy vs Monster: the numbers
| V8 +Energy | Monster | |
|---|---|---|
| Caffeine per serving | 80mg per 8 oz can | 160mg per 16 oz can |
| Caffeine per fl oz | 10.0mg | 10.0mg |
| Servings to reach 400mg (FDA context) | 5.0 | 2.5 |
Sources: V8 +Energy's figure is verified in our V8 +Energy caffeine guide against Campbell's / Caffeine Informer (source); Monster's figure is verified in our Monster guide against Caffeine Informer (source).
Which one should you pick?
Pick V8 +Energy when you want the lighter dose or a slower ramp, and Monster 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
- Monster: 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 Monster have more caffeine? Monster: 160mg per 16 oz can versus 80mg per 8 oz can for V8 +Energy.
Which is stronger per ounce? V8 +Energy, at about 10.0mg per fluid ounce versus 10.0mg for Monster.
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