Methadone and fluconazole: respiratory depression by drug interaction.

Tarumi, Yoko; Pereira, Jose; Watanabe, Sharon · J Pain Symptom Manage · 2002

case_report · Level V

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Abstract

A 60-year-old man with advanced gastric cancer achieved good pain control on a stable dose of methadone for 10 days. However, he developed respiratory depression 2 days after intravenous fluconazole was administrated for refractory oral candidiasis. Intravenous naloxone effectively reversed the respiratory depression. This case illustrates a significant interaction between methadone and fluconazole, and highlights the need for awareness of potential interactions between drugs used in palliative care.

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