Closantel 7.5 %. Indications: Closavet is highly effective against the following internal and external parasites in cattle, sheep, and goats. Internal parasites Liver flukes (Fasciola hepatica & gigantic ) Roundworms (Heamonchus contortus, Oesophagostomum radiatum, strongloid spp) . External parasites: Nasal worms (oestrus ovis) sucking lice (Dermotobia homonis) Nasal bot and tropical warble fly