Synthetic opiate analgesics.
D000701:Analgesics, Opioid / Q000378:metabolism / Q000627:therapeutic use*; D004305:Dose-Response Relationship, Drug; D004361:Drug Tolerance; D006801:Humans; D008657:Metabolic Clearance Rate; D010146:Pain / Q000188:drug therapy*; D011957:Receptors, Opioid / Q000187:drug effects; D013329:Structure-Activity Relationship; D014018:Tissue Distribution
D000701:Analgesics, Opioid; D011957:Receptors, Opioid