title: Pain relief.
mesh_terms: D002047:Buprenorphine / Q000009:adverse effects*; D004723:Endorphins / Q000037:antagonists & inhibitors; D006801:Humans; D009019:Morphinans / Q000009:adverse effects*; D010146:Pain / Q000188:drug therapy*; D010423:Pentazocine / Q000009:adverse effects*
chemical_list: D004723:Endorphins; D009019:Morphinans; D002047:Buprenorphine; D010423:Pentazocine