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MediumInfectious DiseasesGiardiasisukmlamrcgp aktpaneprescribing safety assessment

A 25-year-old man presents with a 1-week history of severe watery diarrhoea, up to 10 times a day, abdominal cramps, and low-grade fever. He recently returned from a backpacking trip in Southeast Asia. Stool microscopy reveals cysts of Giardia lamblia. What is the most appropriate first-line treatment?

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