Aspadol NS Nasal Spray (225 mg/ml) is a potent centrally-acting opioid analgesic primarily used for the rapid management of moderate to severe acute pain. It is commonly used for hospital-admitted patients to treat pain when other non-opioid treatments are insufficient. Primary Uses Postoperative Pain Management: It is specifically indicated for alleviating moderate to severe pain following surgical procedures, such as total knee arthroplasty (TKA). Severe Acute Pain: Used for rapid relief of acute pain episodes due to its fast-acting formulation, which allows for quick absorption through the nasal mucosa. Breakthrough Pain: It may be used for sudden spikes of pain in chronic conditions. Acute Trauma Pain: Provides an alternative for patients experiencing severe pain from injuries.