To provide compositions for prevention and treatment of schistosomiasis comprising a polyunsaturated fatty acid and a therapeutic agent.SOLUTION: A composition comprises arachidonic acid (ARA) and a therapeutic compound that is 2-(cyclohexylcarbonyl)-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one or a derivative thereof.SELECTED DRAWING: None
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