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Not even. I can't speak for others but the effects of 5hr Energy pretty much disappear after those 5 hours are up. Half the caffeine dose isn't enough to do much of anything, at least for me. So it's essentially a waste. I'm sure it depends on things like BMI but to get 5hrs of half-assed energy you'd need to consume 3/4ths of a dose, which would leave you with roughly half the experience of a 5hr Energy (that is, half the difference between the caffeine in your system immediately after drinking one dose and 5hrs after drinking one)