title: Generic version of pain patch.
mesh_terms: D000279:Administration, Cutaneous; D000701:Analgesics, Opioid / Q000008:administration & dosage*; D002908:Chronic Disease; D017277:Drug Approval; D005283:Fentanyl / Q000008:administration & dosage*; D010146:Pain / Q000188:drug therapy*
chemical_list: D000701:Analgesics, Opioid; D005283:Fentanyl