"morphine"的定义和意义

What is "morphine"?

Morphine is a strong opioid medication used mainly to relieve intense pain. It works by attaching to special receptors in the brain and spinal cord, reducing the feeling of pain signals. Morphine is commonly given in hospitals or clinics through injection, and because of its powerful effects, it is closely monitored and controlled to prevent misuse and addiction. It is typically used when other methods of pain relief have not been effective.