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Mid-late season break dose

By the latter part of the grazing season, most lambs will have received wormer treatments involving one or more of the group one, two or three products. Any worms resistant to these groups will have survived these treatments and, because they can live inside a sheep for months, they accumulate over the season. This population of worms in the lambs is therefore made up of a higher proportion of anthelmintic resistant worms than the population in refugia when the levels of resistance are low.

Treatment with an effective product, such as Zolvix™, will remove these worms and stop them from reproducing and adding their genes to the overall population. To get the best result, Zolvix should be incorporated into a worm control programme when the level of resistant worms is low2.

Sustainable worm control

Sustainable worm control


Watch farmer Simon explain how he has incorporated Zolvix into his worming strategy

See how farmer Rob incorporates Zolvix

1.The production costs of anthelmintic resistance in sheep managed within a monthly preventive drench program I.A. Sutherland, J. Shaw, R.J. Shaw Veterinary Parasitology 171 (2010) 300 -304.

2DM Leathwick and BC Hosking Managing anthelmintic resistance: Modelling strategic use of a new anthelmintic class to slow the development of resistance to existing classes, New Zealand Veterinary Journal 57(4), 203-207, 2009.

Zolvix™ 25mg/ml oral solution is a broad spectrum anthelmintic for the treatment and control of gastro-intestinal nematode infections and associated diseases in sheep including lambs, hoggets, breeding rams and ewes. POM-VPS in UK. Information regarding the side effects, precautions, warnings and contra-indications can be found in product packaging and leaflets; further information can also be found in the Summary of Product Characteristics. Advice should be sought from the medicine prescriber prior to use. Zolvix, Elanco and the diagonal bar logo are trademarks of Elanco or its affiliates. Use medicines responsibly (