I think the most convincing example isn't energy drinks but rather Panara bread's energy blaster drinks that they had to stop selling. [1] It seems like they used all the same ingredients common to a lot of energy drinks, but they used more of them.

[1] https://www.cnn.com/2023/10/23/business/panera-lawsuit-charg...

▲

quickthrowman 3 hours ago | parent [-]

The caffeinated lemonade was amazing, but I have a very high caffeine tolerance (1000mg+ a day) and it made me jittery. Can’t imagine what effect it had on people without a serious tolerance.

	▲	0cf8612b2e1e 7 minutes ago \| parent [-]
		That lemonade was stupidly high, 390mg caffeine. Only serious addicts could drink that without noticing strong effects. What’s most remarkable about that case, is that it was a Panera. Could have added 50mg and it would still be more caffeinated than I would expect of the establishment. There was no need to go to the extreme end.