how much caffeine in a small red bull

A standard small Red Bull (the original 8.4 oz / 250 ml can) contains about 80 mg of caffeine. The caffeine content scales with can size, so larger cans have more (for example, a 12 oz can has around 114 mg, a 16 oz can around 151 mg, etc.). This matches typical caffeine amounts listed by Red Bull and major health sources. If you’re monitoring caffeine intake, consider the can size you’re consuming and your total daily caffeine from all sources.