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Parafend LV 9.06% w/v Oral Suspension

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An off-white aqueous suspension containing:
Oxfendazole 9.06% w/v


A broad spectrum anthelmintic for the control of mature and developing immature gastro-intestinal roundworms and lungworms and also tapeworms in cattle and sheep. Parafend LV is ovicidal for strongyle eggs.

For the treatment of CATTLE infested with the following species:

Gastro-Intestinal Roundworms: Ostertagia spp, Haemonchus spp, Nematodirus spp, Trichostrongylus spp, Cooperia spp, Oesophagostomum spp, Chabertia spp, Capillaria spp and Trichuris spp.

Lungworms: Dictyocaulus spp.
Tapeworms: Moniezia spp.

For the treatment of SHEEP infested with benzimidazole susceptible strains of the following species:

Gastro-Intestinal Roundworms: Ostertagia spp, Haemonchus spp, Nematodirus spp, Trichostrongylus spp, Cooperia spp, Oesophagostomum spp and Chabertia spp. Also provides useful control of Trichuris spp.

Lungworms: Dictyocaulus spp.
Tapeworms: Moniezia spp.

In cattle it is also effective against inhibited larvae of Cooperia spp, and usually effective against inhibited/arrested larvae of Ostertagia spp.

In sheep it is effective against inhibited/arrested larvae of Nematodirus spp, and benzimidazole susceptible Haemonchus spp and Ostertagia spp.

Dosage & Administration

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

Do not mix with other products.

Withdrawal Period

Cattle (meat) 9 days
Sheep (meat) 21 days
Not for use in cattle or sheep producing milk for human consumption

Contraindictions, Warnings etc

Care should be taken to avoid the following practices because they increase the risk of development of resistance and could ultimately result in ineffective therapy:

Too frequent and repeated use of anthelmintics from the same class, over an extended period of time.
Under dosing, which may be due to underestimation of body weight, misadministration of the product, or lack of calibration of the dosing device (if any)

Suspected clinical cases of resistance to anthelmintics should be further investigated using appropriate tests (e.g. Faecal Egg Count Reduction Test). Where the results of the test (s) strongly suggest resistance to a particular anthelmintic, an anthelmintic belonging to another pharmacological class and having a different mode of action should be used.

Resistance to benzimidazoles has been reported in Teladorsagia, Haemonchus, Cooperia and Trichostongylus species in small ruminants. Therefore the use of this product should be based on local (regional, farm) epidemiological information about susceptability of nematode and recommendations on how to limit further selection for resistance to anthelmintics.

Do not exceed the stated dose. For oral use only. Veterinary advice should be sought:

a) On appropriate dosing programmes and stock management to achieve adequate parasite control, and to reduce the likelihood of anthelmintic resistance developing.
a) If the product does not achieve the desired clinical effect, as other diseases, nutritional disturbances or anthelmintic resistance may be present.

Pharmaceutical Precautions

Do not store above 25ºC, protect from frost and light.

Further Information

Oxfendazole belongs to the benzimidazole (1 - BZ) class of anthelmintics.

In case of lungworm infections coughing may persist for a considerable time following successful treatment. This is due to tissue damage caused by the parasites.

After treatment, animals should be moved to clean pasture in order to prevent re-infection. Where this is not done regular re-treatment may be necessary.

Click here to read the SPC.

Please note: Product information presented on this website is intended only as a brief summary of Norbrook products for your convenience. Not all products or indications are licensed in every country and may be subject to further local variations. For specific product information you should always consult a healthcare professional from your region. Please see our terms and conditions for further information.

If you are a veterinary surgeon and would like additional information on any of our products please email enquiries@norbrook.co.uk