[spennino]

Why do energy drinks get all the heat? Starbucks coffee has around twice as much caffeine/oz and an even higher ratio per serving

[T-hawk]

Quantity of consumption. It's a lot easier to buy Monster in multi-packs and gulp through three or four cans in an hour or two. Nobody buys multiple cups at Starbucks or returns to the store that frequently.

[pyre]

Energy drinks have other stimulants in them than just caffeine. See some of the other posts here about stuff like taurine and guarana.

[ahoge]

Guarana is just a different source of caffeine.

http://en.wikipedia.org/wiki/Guarana