If you are addicted to Klonopin, you will experience withdrawal symptoms such as nausea and anxiety. These symptoms develop because your brain and other body systems have become chemically dependent on Klonopin in order to function normally. Klonopin (clonazepam) is a medication classified as a benzodiazepine that is used to treat anxiety, panic disorder, and seizures. Klonopin detox can be fatal and requires medical treatment and supervision. Some people abuse the drug for its sedative effects, which can provide a pleasurable sense of calm, relaxation, and relief.