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mental health

Judged: two independent readers; copy check clear.

fentanyl

fentanyl Fentanyl is a very strong opioid pain-relieving drug that mainly acts on mu-opioid receptors.

Fentanyl is a very strong opioid pain-relieving drug that mainly acts on mu-opioid receptors. In mental health contexts, it is relevant because misuse can lead to habituation or addiction.