Hemlock poisoning due to plant misidentification

Maria Laura Colombo, Katia Marangon, Carlo Locatelli, Mara Giacchè, Roberto Zulli, Patrizia Restani

Research output: Contribution to journalArticlepeer-review


A case report (two patients) of accidental intoxication occurred in Northern Italy. Conium maculatum L. (poison hemlock) leaves were confused with and collected as Foeniculum vulgare Mill. (sweet fennel). C. maculatum contains piperidine alkaloids: coniine, N-methylconiine, conhydrine, pseudoconhydrine and □-coniceine, toxic to human beings. Identification and microscopic examination of the consumed plants were according to clinical signs of patients. Haematological and biochemical indices in blood, morphological alterations and the effect of the treatment were directly related to the intoxication. The patients were discharged alive and well after 3 days of supportive treatment.

Original languageEnglish
Pages (from-to)43-47
Number of pages5
JournalJournal of Pharmaceutical Sciences and Research
Issue number4
Publication statusPublished - 2009


  • Accidental intoxication
  • Coniine analysis
  • Conium maculatum

ASJC Scopus subject areas

  • Pharmaceutical Science


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