Denixil Rapid 0.5 mg Tablet is a prescription medication manufactured by Renata Limited in Bangladesh. Its active ingredient is Clonazepam, a benzodiazepine that exhibits anticonvulsant, anxiolytic, sedative, and muscle-relaxant properties. Clonazepam works by enhancing the activity of gamma-aminobutyric acid (GABA), a neurotransmitter that inhibits nerve transmission in the brain, leading to a calming effect.