Treat Accordingly

Although there are many brands of dewormer, there are only 5 active ingredients – fenbendazole, ivermectin, moxidectin, praziquantel and pyrantel – and which to use will depend on which worm(s) need to be treated, previous treatment history of the horse(s), and whether resistance is present on your premises.  

It is also crucial to always deworm in accordance with your horse’s weight, as under-dosing can lead to resistance in surviving worms. 

Pasture management will help to manage your horse’s worm burden, and reduce the number of worm treatments you need to give¹. 

• Remove faeces from pasture (‘poo-pick’) at least twice weekly.  
• Avoid spreading horse manure on pasture grazed by horses.  
• Avoid overstocking and overgrazing.  
• Rotate grazing with sheep or cattle and/or rest pastures regularly.  
• Thoroughly clean stables regularly especially when they contain foals and weanlings. 

Online Retailers of Dewormers

Equine dewormers are prescription medicines, classified as POM-VPS which means they must be prescribed by a Vet, Pharmacist or Suitably Qualified Person. They can be prescribed and purchased via veterinary practices, agri-trade stores or pharmacies, including online. The online pharmacies below are VMD accredited internet retailers.