Answer:
Opioid
Step-by-step explanation:
An opioid is any psychoactive chemical compound that produces pharmacological effects similar to opium or its substances, although not chemically related. Opioids act on opioid receptors, with effects similar to morphine, for example. It is used as an analgesic because it conveys a strong sensation of pain relief, however the constant use of this compound can lead to addiction and even withdrawal symptoms when someone addicted does not have access to it. Patients with opioid withdrawal usually have weak pulse, shallow or absent breathing, delirium or coma, and blue lips .