Klonopin 2mg is a prescription medicine that is used to treat seizure and anxiety disorders. The main ingredient of Klonopin is Clonazepam. It’s part of the class of benzodiazepines and functions to calm the nerves and brain. Klonopin 2mg is a brand-name variant of the generic medication Clonazepam. It’s used to treat panic attacks, anxiety as well as seizures. Clonazepam alters the central nervous system and can reduce abnormal brain activity.