title: Potent painkillers: addictive?
mesh_terms: D000701:Analgesics, Opioid / Q000009:adverse effects / Q000627:therapeutic use*; D003248:Constipation / Q000139:chemically induced; D004338:Drug Combinations; D006801:Humans; D008875:Middle Aged; D009293:Opioid-Related Disorders / Q000209:etiology* / Q000523:psychology
chemical_list: D000701:Analgesics, Opioid; D004338:Drug Combinations