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United Kingdom


The following material is intended for UK professional keepers of animals, UK veterinary surgeons and SQPs only. By continuing to browse this site, you confirm that this describes you.


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Anyone who needs or recommends parasite control products knows their job is getting tougher. We can no longer rely on old strategies and tired routines. Here at Zoetis we realise that simplistic solutions are not delivering the answers you need. It’s time to change and bring in some new thinking.

Parassist is a completely novel approach to parasite control, bringing together tools, services and a portfolio of products to help you and your customers with decision making. We’ve also put together a dedicated team of highly respected vets working in the field of herd and flock health. They will partner with you to help you find innovative solutions to complex challenges and new protocols that are fit for purpose, customised to the season and your area.

Partner with Parassist for an altogether more professional approach to parasite control.


parasite watch

Parasite Watch


Working with 18 farms to bring you the latest parasite risk information for your area.

Visit www.parasitewatch.co.uk for up to date insight into the stomach worm, Nematodirus, Fluke and fly burdens in your area.


In autumn there is likely to be a mixed burden of both stomach worms and fluke on most farms in the UK. The milder winters and wetter summers are working to increase this risk. Worm and fluke infestations individually cause production losses, a combination of both can be exponentially worse. Worms can result in a loss of up to 4.7kg live-weight and fluke can cost up to £3-5 a head1,2. Results from the Parasite Watch farms and VIDA data suggests that mixed infestations are common:


*WAARD Project Final Report, September 2015

CYDECTIN® TriclaMox® Oral Solution for Sheep contains moxidectin and triclabendazole.

  • The longest persistent action against roundworms
  • Active against all liver fluke stages


The transition into housing is a risky time for first grazing season animals, there are so many things to consider; dietary change, weaning, grouping, respiratory disease, and how to control parasites, specifically fluke and worms.

Protecting cattle against fluke at housing rather than delaying treatment will yield a financial return by reducing stress and improving growth rates, according to a recent study3


A trial by FAI Farms in Oxfordshire compared the effectiveness of parasite treatments in first season grazing animals. The treatments were either; the fluke and worm pour-on CYDECTIN® TriclaMox® or the worm pour-on CYDECTIN® given at housing, a group was also given no treatment to determine the impact of delaying treatment.

The stress of housing and weaning led to an 89% drop in growth rates across all groups. Cattle handled post housing also have the potential for a second growth rate dip of 20% as a result of being handled twice.

Don’t delay

Cattle treated at housing with CYDECTIN TriclaMox outgrew those that were untreated during the 4-8 weeks post housing. It is at this time after housing that many farms would consider treating their cattle, missing out on vital growth rate and profit during the 4-8 weeks post-housing;

  • Animals treated at housing with CYDECTIN TriclaMox gained an average of 16.1kg
  • Cattle treated at housing using with CYDECTIN gained 13.4kg
  • Cattle offered no worm or fluke treatment at housing gained 8.6kg.

Therefore, treating cattle for worms and fluke at housing has been shown to produce both production and management benefits; from an animal management point of view, it reduces the need for further handling of animals later in the housing period. From a productivity perspective, animals that were treated at housing had the potential to finish up to 12 days before untreated animals and also gained up to 7.5kg more delivering an extra £16.52 per head.

CYDECTIN TriclaMox is the only combination fluke and worm product to provide both a persistent wormer and a flukicide that treats all stages of fluke, early immature, late immature and adults. Treating cattle at housing rather than delaying treatment has been found to improve growth rates compared to animals receiving delayed treatment or no treatment at all.

  • One treatment for stomach worm, lungworm, lice and liver fluke control
  • Reduced stress, cattle only need to be handled once
  • Easy to use Rainfast Pour-On

1.Miller et al Veterinary Parasitology doi:10.1016/j.vetpar2011.11.063
2.Sheep Health and Welfare Group Report (2016)

3. Armstrong.D. A Farm-based Trial to Compare Effectiveness of Parasite Treatment in the Winter Housing Period. Presented at British Cattle Veterinary Association Congress 2018, Hinckley Island, Leicestershire. 18th‑20th October 2018

CYDECTIN TRICLAMOX 1 MG/ML + 50 MG/ML ORAL SOLUTION FOR SHEEP contains moxidectin and triclabendazole. POM-VPS CYDECTIN TRICLAMOX 5 MG/ML + 200 MG/ML POUR-ON SOLUTION FOR CATTLE contains moxidectin and triclabendazole. POM-VPS. For further information please see the product’s SPC or contact Zoetis UK Limited, Walton Oaks, Dorking Road, Tadworth, Surrey KT20 7NS. www.zoetis.co.uk. Customer Support: 0845 300 8034. Use medicines responsibly (www.noah.co.uk/responsible). Date of preparation: June 2018 AH463/18