Mixing caffeine with alcohol does not make anyone less drunk. It makes them less able to tell.
The New Jersey Poison Control Center at Rutgers New Jersey Medical School issued that warning ahead of the fall semester, and the timing is deliberate. Diane Calello, the center's executive and medical director, said energy drinks do not make alcohol safer, and that while caffeine may make someone feel more awake, it can hide the warning signs of intoxication and create a false sense of sobriety.