Oh, I'm so sorry. I was being amused. See we've had this rash of bogus topics that were very well thought out and entertaining, but bogus nontheless. Since I didn't recall the auto docs in Dead Money giving you an adrenaline boost, and after a quick check of the wiki, where it said nothing about it, I assumed this was another one. I apologize prufusely.
-Gunny out.
Ah. Yeah It was around the spot where you rescue the girl who can't talk. I think if you play on hardcoe mode then it gives you this thing so you don't have to sleep (because it's nearly impossible to sleep in dead money). The problem is that it works indefinately even after you finish the DLC.