A marvelous dietary supplement containing a mixture of both caffeine and ephedra alkaloids. Ohhh, the joy. Typically used for keeping your head off the keyboard when it's midnight wherever you are and you've been writing code for the last 16 hours straight. Do not use unless you really do want to be awake for hours in some sort of borderline hallucinatory state. Has been known to cause delusions of grandeur, heart palpitations, and nonsensical Linux kernel patches.