Zerofen 2.5% is a broad spectrum anthelmintic for the control of mature and developing immature forms of the major species of roundworms in sheep and cattle.
In sheep it is effective against benzimidazole susceptible strains of the following parasites:
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. The product may be useful for the control of Trichuris in sheep.
In cattle it is effective against the following parasites:
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. Zerofen has an ovicidal effect on nematode eggs.