A long-acting benzodiazepine known as clonazepam is often prescribed to treat seizures, panic attacks, and extreme anxiety. <br>A potent, long-acting benzodiazepine, clonazepam has high potency. It pharmacologically affects GABA-A receptors by acting as a positive allosteric modulator. The endogenous ligand for the GABA-A receptor, a ligand-gated chloride ion-selective channel, is GABA (gamma-aminobutyric acid)