These cartridges put out 4 million SHU making sure the perpetrator stays down after being hit with the OC. This OC has Concentrated strength: Active agent Piexol 400kS. Piexol is an extract from the cayenne pepper plant. Its irritating effects come from capsaicinoids, contained in the extract. The liquid extract irritates the eyes, the mucous membranes (nose, mouth) and the respiratory tract. The result: temporary blindness, coughing and nausea. The knockout lasts about 45 minutes, normally without side effects• Pepper plant extract • Strongest agent in the world • Immediate effects• Dissipates after 45 minutes • No side effects p the perpetrator down for over 45 minutes.