Pain, especially chronic pain, is a common neurological phenomenon. The most common chronic pain conditions include low back pain, arthritis pain, migraine and cancer pain—all of which seriously affect people’s physical and mental health. Opioids, such as morphine and fentanyl, are currently the most widely used potent pain-relief drugs. They produce analgesic effects by acting on G protein-coupled receptors, the opioid receptors.
Click here for original story, Scientists show how fentanyl and morphine act on μ opioid receptor
Source: Phys.org