Fatal Zipeprol and Dextromethorphan Poisonings in Korea*

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Abstract
Zipeprol and dextromethorphan are abused together by young people in Korea to obtain a stronger hallucinogenic effect. Because large amounts of these drugs are taken for this reason, nine fatal poisonings due to zipeprol and dextromethorphan have been reported since 1993. In this paper, the concentration of drugs in the postmortem blood and gastric contents of these victims is examined. The determination and identification of the drugs in biological fluids were conducted by gas chromatography (GC)-thermionic specific detection and GC-mass spectrometry. Linear calibration curves and high recoveries were obtained. The blood concentrations of zipeprol varied from 1.3 to 28.6 µg/mL, and the concentrations of dextromethorphan ranged from 1.1 to 18.3 µg/mL. The concentration of zipeprol in the gastric contents ranged from 26.8 to 1384.8 µg/g, and dextromethorphan concentrations varied from 2.1 to 243.7 µg/g.

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