Carfentanil is a β-arrestin-biased agonist at the μ opioid receptor.
Nokomis Ramos-GonzalezSam GroomKaty J SutcliffeSukhvinder BancroftChris P BaileyRichard B SessionsGraeme HendersonEamonn KellyPublished in: British journal of pharmacology (2023)
Carfentanil is a β-arrestin-biased opioid drug at the μ opioid receptor. It remains to be seen how such bias influences the in vivo effects of carfentanil relative to other fentanyls.