Stopping a benzodiazepine like Xanax, Klonopin, or Valium suddenly can trigger seizures, and that puts it in the same category of risk as alcohol withdrawal. The symptoms also last longer than most people expect, sometimes stretching for weeks rather than days, with anxiety and insomnia that can come and go in waves. This is why these medications are tapered down gradually under medical supervision instead of stopped cold. A slow, planned reduction gives your nervous system time to adjust and keeps the dangerous symptoms in check.