A pale pink smooth suspension for oral administration. Each ml of Zerofen 10% contains 100 mg fenbendazole.

Zerofen 10% is a broad spectrum anthelmintic for the control of mature and developing immature forms of the following major species of roundworms in cattle and sheep. Zerofen has an ovicidal effect on nematode eggs.

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.

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.

To ensure administration of a correct dose, body weight should be determined as accurately as possible; accuracy of the dosing device should be checked.

Give as an oral drench at the rate of 7.5 mg fenbendazole per kg bodyweight (approximately 1 ml per 13 kg bodyweight).

Give as an oral drench at the rate of 5 mg fenbendazole per kg bodyweight (approximately 1 ml per 20 kg bodyweight).

Animals must not be slaughtered for human consumption during treatment. Cattle may be slaughtered for human consumption only after 14 days from the last treatment. Sheep may be slaughtered for human consumption only after 21 days from the last treatment.

Milk for human consumption must not be taken during treatment. Milk for human consumption may be taken from cows only after 132 hours from the last treatment. Do not use in sheep producing milk for human consumption.

Shake container before use. Do not mix with other products.

Direct contact with skin should be kept to a minimum. Wear suitable protective clothing including impermeable rubber gloves. Wash hands after use.

Intensive use or misuse of anthelmintics can give rise to resistance. To reduce this risk dosing programmes should be discussed with your veterinary adviser.

Do not contaminate ponds, waterways or ditches with product or used containers.

Unused product and containers should be disposed of in accordance with any guidance from an appropriate waste regulation authority.

For animal treatment only. Keep out of the reach and sight of children.

Do not freeze. Intensive use or misuse of anthelmintics can give rise to resistance. To reduce this risk dosing programmes should be discussed with your veterinary adviser.

Standard packs – 1L, 2.5L, 5L, 10L

Flexi packs – 1L, 2.5L, 5L.

Fenbendazole belongs to the Benzimidazole (1-BZ) class of anthelmintics.

Zerofen 10% can be safely used at the recommended dose rate during pregnancy and lactation.