Monster vs Starbucks London Fog: which has more caffeine?

Monster has more caffeine than Starbucks London Fog: 160mg vs 40mg in the same 16 oz can. That is a 120mg 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.

Monster vs Starbucks London Fog: the numbers

Sources: Monster's figure is verified in our Monster caffeine guide against Caffeine Informer (source); Starbucks London Fog's figure is verified in our Starbucks London Fog guide against Starbucks nutrition listing (source).

The concentration gap is the striking part: Monster packs roughly 4 times the caffeine per ounce. Sipping speed matters at that density; a 16 oz can finished in minutes hits differently than the same milligrams spread over a slow cup.

Which one should you pick?

Pick Starbucks London Fog 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

• Monster: the full caffeine guide
• Starbucks London Fog: the full caffeine guide
• The verified caffeine database

FAQ

Does Monster or Starbucks London Fog have more caffeine? Monster: 160mg per 16 oz can versus 40mg per 16 oz grande (40mg at every size) for Starbucks London Fog.

Which is stronger per ounce? Monster, at about 10.0mg per fluid ounce versus 2.5mg for Starbucks London Fog.