Zerofen 2.5% Fenbendazole Sheep and Cattle Wormer is a worm drench for roundworm and lungworm. It is a broad spectrum anthelmintic for the control of mature and developing immature forms of the following major species of roundworm in sheep and cattle.

In sheep, it is effective against : Gastro-intestinal roundworms: Ostertagia, Haemonchus, Trichostrongylus, Nematodirus, Cooperia, Oesophagostomum, Chabertia, Bunostomum and Strongyloides species. Lungworms: Dictyocaulus filaria. It is usually effective for the control of tapeworms, Moniezia spp, in sheep. May be useful for the control of Trichuris in sheep.

In cattle, it is effective against: Gastro-intestinal roundworms: Ostertagia, Cooperia, Trichostrongylus, Nematodirus, Haemonchus, Oesophagostomum, Bunostomum, Strongyloides and Trichuris species. Lungworms: Dictyocaulus viviparus. It is usually effective against inhibited larvae of Ostertagia species in cattle. Has an ovicidal effect on nematode eggs.

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