What's in Red Bull anyway?

Red Bull gives you wings, or so says it's well-known slogan. But while that offer is tempting, it's also makes me a bit wary -- what's the magic ingredient that makes you fly? Fitsugar addressed this question recently, and here's the lowdown: A regular Red Bull has 27 g of sugar, which is the equivalent of 2 tablespoons, so that doesn't hurt. It also contains:

• Taurine: originally from bull bile but now synthetically made, it can be used either as a stimulant or a sedative, and it can help regulate your heartbeat.
• Glucuronolactone: supposedly this additive fights fatigue
• Caffeine: one can had 80 mg of caffeine -- three times the caffeine that's in a can of coke
• Niacin: Usually, Niacin helps with cholesterol but it's barely traceable in Red Bull.
  

Fitsugar sums up by saying it's basically caffeine with sugar and I agree. What about you?