{Reference Type}: Case Reports {Title}: Adverse effects from counterfeit and mislabeled medicine containing tapentadol and carisoprodol. {Author}: Plæhn G;Fuglsang T;Hindersson P;Breindahl T; {Journal}: Clin Case Rep {Volume}: 12 {Issue}: 8 {Year}: 2024 Aug 暂无{DOI}: 10.1002/ccr3.9241 {Abstract}: When self-administration with counterfeit or mislabeled medicine is suspected, comprehensive laboratory analysis should be preferred over immunoassay screening to avoid false negative results. Carisoprodol, which was formerly a popular muscle relaxant drug in many countries, has reappeared on illegal drug markets, and may cause an itching, purple-colored rash, even after a single dose.