Morphine injection 20 mg/ml is a systemic opioid analgesic indicated only for IV, epidural and intrathecal infusion in the treatment of intractable chronic pain. It was developed for use in continuous microinfusion devices and the dosage requirements of the individual patient. Morphine injetion 20 mg/ml is primarily intended for patients who are opioid -tolerant. Morphine sulfate administered epidurally or intrathecally provides pain relief for extended periods without attendant loss of motor, sensory or sympathetic function