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[Metamizol--acute overdose with suicidal intent].

H Wolhoff, G Altrogge, W Pola

    Deutsche Medizinische Wochenschrift (1946)
    |November 18, 1983
    PubMed
    Summary

    A severe metamizole (Novalgine) overdose was treated successfully with forced diuresis, leading to patient survival without organ damage. This highlights forced diuresis as an effective elimination method for metamizole toxicity.

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    Thin-layer chromatographic determination of major metamizole metabolites in serum and urine.

    Journal of chromatography·1983

    Area of Science:

    • Pharmacology
    • Toxicology

    Background:

    • Metamizole (Novalgine) is a pyrazolone derivative used for pain and fever.
    • Overdosage of pyrazolone derivatives can lead to severe toxicity and potentially fatal outcomes.
    • This case involves a significant intentional overdose of metamizole.

    Observation:

    • An 18-year-old female ingested 49g of metamizole (98 Novalgine tablets) with suicidal intent.
    • Following gastric lavage, the patient underwent 14 hours of forced diuresis.
    • Serum and urine metamizole metabolite levels were monitored using thin-layer chromatography.

    Findings:

    • Metamizole metabolite concentrations remained elevated in serum 24 hours post-ingestion.
    • Approximately 11g of metamizole was eliminated via renal excretion.

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  • The patient recovered without significant organ abnormalities, contrasting with lethal intoxication reports of similar drugs.

    • Implications:

    • Forced diuresis appears to be a viable and satisfactory method for enhancing metamizole elimination.
    • Metamizole biotransformation and elimination processes continue beyond 24 hours after overdose.
    • This case suggests a potentially better safety profile for metamizole monotherapy compared to combination products in overdose scenarios.