Illinois supreme court says pharmacists' duty to warn is voluntary.
D000700:Analgesics / Q000009:adverse effects; D001241:Aspirin / Q000009:adverse effects; D001463:Barbiturates / Q000009:adverse effects; D002110:Caffeine; D004338:Drug Combinations; D017007:Duty to Warn / Q000331:legislation & jurisprudence*; D006801:Humans; D007087:Illinois; D010595:Pharmacists / Q000331:legislation & jurisprudence*; D010615:Phenacetin / Q000009:adverse effects
D000700:Analgesics; D001463:Barbiturates; D004338:Drug Combinations; D002110:Caffeine; C001220:aspirin, butalbital and caffeine drug combination; D010615:Phenacetin; D001241:Aspirin