WSD Closantel Narrow Spectrum Drench

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WSD CLOSANTEL is a narrow spectrum treatment for internal parasites of sheep and lambs with sustained action against re-infestation by Haemonchus contortus (barbers pole worm), and activity against Fasciola hepatica (liver fluke).

WSD CLOSANTEL is a clear solution for oral use as a drench containing 37.5g/L closantel – a member of the salicylanilide and substituted phenol group of compounds. Indications Sheep and Lambs: Haemonchus contortus (barber's pole worm), Fasciola hepatica (liver fluke) from 6 weeks, and Oestrus ovis (nasal bot). Closantel provides sustained protection against the re-infestation by both mature and immature stages of barber's pole worm in sheep for 4 weeks after dosing. Closantel controls both mature and immature stages of liver fluke as well as all stages of nasal bots.

Milking Sheep: Do NOT use in sheep producing milk for human consumption Dosage Always refer to the label. Separate into different weight classes if there is a large variation in age and weight. Dose at the rate of 1ml per 5kg body weight. Advice On Use

• WSD CLOSANTEL is particularly useful if administered in spring before the rise in Haemonchus parasites in the sheep or survival of larvae on pastures. • Administration in spring is also useful in removing residual liver fluke. infestations, and managing the contamination and early pickup of the liver fluke in affected areas. This provides a useful alternative to WSD triclabendazole products.

• When treating an outbreak of haemonchosis (barbers pole infestation), consideration should be given to using an alternative drench from the WSD range, particularly WSD LEVAMISOLE or WSD COMBINATION.

• WSD CLOSANTEL is particularly effective when combined with management strategies to control haemonchosis including rotation and spelling of paddocks. • Closantel is NOT effective against the other major gastrointestinal worm parasites. • Resistance to closantel is widespread among barbers pole worm (Haemonchus) in some sheep-raising districts.

• The repeated use of any drench is likely to result in the emergence of resistance and therefore, regular testing for efficacy is recommended if closantel is used.

• The emergence of resistance on an individual farm is likely to result in the failure of closantel to provide extended protection against re-infestation by Haemonchus


Label WSD_Closantel (

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Bree J.

Good product

Has always been an important part of our stocks worming protocol.



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