There is a common misconception that energy drinks have a particularly high caffeine concentration. Often the people who fuss over this are coffee drinkers themselves.

Energy drinks typically have 32 mg of caffeine per 100 ml. This translates to the following total amounts of caffeine per container:

Container Size Caffeine (mg)
0.25 L 80 mg
0.33 L 106 mg
0.5 L 160 mg

Now, coffee on the other hand has about 44,8 - 80 mg of caffeine per 100 ml, translating to the following dozages:

Container Size Caffeine (mg) (Range)
0.125 L (small cup) 56 - 100 mg
0.2 L (medium mug) 90 - 160 mg
0.25 L (large mug) 112 - 250 mg

(Source)

And finally, here’s the same as an image – I hope that by now you’ll agree that if you want to be worried about someone getting too much caffeine, you should be worried of those who drink coffee. Coffee doesn’t even come with any warnings of the max recommended servings per day, unlike energy drinks. And this post doesn’t even begin to address espresso, which is about four times as strong as regular coffee!