Bevacizumab Perforation — SCE Medical Oncology MCQ
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Correct answer: A — Take 4 mg, then 2 mg two-hourly; continue for 12 hours after the last liquid stool, maximum 48 hours
Irinotecan delayed diarrhoea uses high-dose loperamide: 4 mg at the first liquid stool, then 2 mg every two hours, continuing for 12 hours after the last liquid stool but no longer than 48 hours. Standard OTC limits are inadequate; prolonged treatment risks ileus, and prophylaxis is not advised. Fever, severe diarrhoea, dehydration or persistence beyond 48 hours changes the plan to urgent hospital assessment.
Reference: Irinotecan 20 mg/ml UK SmPC. https://www.medicines.org.uk/emc/product/100107/smpc