text: <unk>  is an opioid analgesic that is FDA approved for the treatment of management of moderate to moderately severe chronic pain in adults who require around-the-clock treatment of their pain for an extended period of time.   Common adverse reactions include seizure risk, suicide risk, serotonin syndrome, anaphylactoid and allergic reactions, respiratory depression, withdrawal symptoms.
option_0: Tramadol
option_1: Tapentadol
option_2: Hydrocodone
option_3: Etodolac
option_4: Oxycodone
option_5: Acetylmethadol
option_6: Morphine 
option_7: Nefazodone