title: Tramadol.
mesh_terms: D000701:Analgesics, Opioid / Q000009:adverse effects*; D000768:Anesthesia, General; D001364:Awareness / Q000187:drug effects; D006801:Humans; D011939:Mental Recall / Q000187:drug effects*; D009325:Nausea / Q000139:chemically induced*; D010149:Postoperative Pain / Q000517:prevention & control; D014147:Tramadol / Q000009:adverse effects*
chemical_list: D000701:Analgesics, Opioid; D014147:Tramadol