<prompt> The drug which acts by inhibiting oxidative phosphorylation in helminths?NiclosamidePiperazinePraziquantelMebendazole  <response>: Niclosamide is a chlorinated salicylamide for most cestode infections acts by, inhibiting oxidative phosphorylation. But post drug purging is required for niclosamide, unlike praziquantel and albendazole.Ref: Sharma and Sharma 2nd epg 805. 