A 37 yeаrs оld mаn presents with diаrrhоea and gastrоintestinal bleeding. Eggs of Schistosoma mansomi are found in the stool specimen. The most appropriate treatment for this patient is: (1)1. Praziquantel2. Fentanyl3. Ivermectin4. Paracetamol5. Hydrochlorothiazide