2,5-Dimethoxy-4-bromoamphetamine (DOB) is a strongly acting hallucinogen with an estimated effective dose of 2 mg for an 80 kg man. The case of two men who ingested a new "hallucinogen LSD-like" designer drug is reported here. They experienced intense hallucinations (onset after 15 min) and vomiting. The men became unconscious and fell into deep coma lasting several days. After an unknown period of time elapsed they were admitted to a hospital in a comatose state. One subject (AX, body mass 113 kg) survived, while the second subject (BX, body mass 65 kg) experienced convulsions, metabolic acidosis and died 6 days later. Gastric, blood, and urine specimens collected on admission into the hospital were sent for toxicological examination. Ethanol concentrations in the blood samples were less than 0.2 g/kg. CEDIA urine screening indicated the presence of THCOOH in both cases, while cocaine and its metabolites were only indicated in the urine from AX. Immunoassay for amphetamines was negative in urine specimens collected from both subjects. GC-MS analysis for unknown drugs allowed for the discovery of the presence of DOB in the gastric and urine samples of both persons. DOB-targeted analysis for the acetylated analyte confirmed its presence in both subjects. Quantitative analysis yielded concentrations in serum of 13 ng/ml (AX) and 19 ng/ml (BX). This report on both nonfatal and fatal DOB overdose cases is based on clear toxicological evidence, and is the first documentation of DOB consumption in the Czech Republic.

Institute of Forensic Medicine and Toxicology 1st Medical Faculty Charles University Prague 121 08 Prague 2 Czech Republic

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