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Here is a little bit from their FAQ:
1. How does Google Gulp work?
Well, to comprehend the long version of this answer, you’d need a PhD (from Stanford, natch). The short version is, our brains process data by sending electrical impulses called neurotransmitters between billions of neurons via axons running between synapses, much the way buses travel between stations, or MP3 files travel between felonious suburban teenagers. The molecular compound that fuels Google Gulp speeds up this process by, among various startling feats of neurochemical legerdemain, limiting the activity of the enzyme monoamine oxidase. You think faster – and feel better.
What’s more, through our patented real-time DNA-scanning process, Auto-Drink™, Google Gulp is actually able to “take a picture” of your genetic profile, reconfigure its molecular composition on the fly, and subtly alter your brain’s intricate mosaic of axonial patterns in order to facilitate even faster cognitive processing.
2. Wait – you’re saying Auto-Drink™ changes my brain chemistry?
Um, yeah – but for the better.