Benzodiazepine withdrawal can be dangerous, in some cases medically serious the way alcohol withdrawal is, with seizures and other complications that put you at real risk. It also runs longer than most people expect. Symptoms can stretch on for weeks, and for some people certain effects linger well past that. Because of both the danger and the length, you do not stop a benzodiazepine cold. You come off it through a taper, reducing the dose gradually under medical supervision so your body has time to adjust.