title: [Difference between day and night. Pain therapy should also follow the biological rhythm].
mesh_terms: D000700:Analgesics / Q000008:administration & dosage* / Q000493:pharmacokinetics; D000701:Analgesics, Opioid / Q000008:administration & dosage* / Q000493:pharmacokinetics; D001682:Biological Availability; D019454:Chronotherapy; D006801:Humans; D010146:Pain / Q000097:blood / Q000188:drug therapy*; D010149:Postoperative Pain / Q000097:blood / Q000188:drug therapy*; D016896:Treatment Outcome
chemical_list: D000700:Analgesics; D000701:Analgesics, Opioid