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). Type of Preparation: 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.
