WSD Fenbendazole 25 Oral Anthelmintic For Sheep, Goats And Cattle

Description

How does WSD Fenbendazole 25 Oral Anthelmintic work? 

WSD Fenbendazole 25 is formulated with fenbendazole, a benzimidazole anthelmintic (Group 1-BZ) that works by binding to the protein tubulin inside parasitic worms, disrupting their cell structure and energy metabolism. This prevents the worm from feeding and reproducing, eventually leading to death.

How is WSD Fenbendazole 25 applied? 

WSD Fenbendazole is administered orally, and can be done using standard, accurate drenching equipment. It features a non-clogging formula and is ready to use without dilution or mixing. It can be applied at the same time as vaccines, jetting, dipping operations, and pour-on lice treatments, making it practical and versatile for use in busy marking, shearing, and weaning periods. 

Which parasites does fenbendazole control? 

The active ingredient fenbendazole offers effective control against a range of mature and immature (L4 larval stage) parasites, which makes it invaluable for tackling developing worm burdens before production losses occur.

Sheep and goats

In sheep and goats, WSD Fenbendazole 25 controls benzimidazole-sensitive strains of the following parasites:

• Barber’s pole worm (Haemonchus contortus)
• Black scour worm (Trichostrongylus spp.)
• Large lungworm (Dictyocaulus filaria)
• Large-mouthed bowel worm (Chabertia ovina)
• Nodule worm (Oesophagostomum columbianum)
• Small brown stomach worm (Ostertagia spp.)
• Small intestinal worm (Cooperia spp.)
• Thin-necked intestinal worm (Nematodirus spp.)

It also aids in the control of tapeworm (Moniezia expansa) and whipworm (Trichuris ovis). 

Cattle

In cattle, WSD Fenbendazole 25 Oral Anthelmintic controls the following parasites:

• Barber’s pole worm (Haemonchus placei)
• Black scour worm (Trichostrongylus spp.)
• Hairworm (threadworm) [Capillaria spp.]
• Lungworm (Dictyocaulus viviparus)
• Nodule worm (Oesophagostomum radiatum)
• Small brown stomach worm (Ostertagia spp.)
• Small intestinal worm (Cooperia spp.)
• Thin-necked intestinal worm (Nematodirus spp.)
• Whipworm (Trichuris spp.)

Frequently asked questions

Is fenbendazole still effective for sheep worms in Australia?

Whether a fenbendazole sheep drench will be effective is dependent on your property. BZ resistance is widespread in Australia, particularly in areas that receive high summer rainfall. To determine if fenbendazole is still a viable option for you, conduct a faecal egg count reduction test. 

In areas where resistance hasn’t developed, fenbendazole offers an effective, low-cost, broad-spectrum option.

What’s the difference between WSD Fenbendazole 25 and Panacur 25?

Both WSD Fenbendazole 25 and Coopers Panacur 25 anthelmintics contain fenbendazole at the same concentration, 25g/L, and control the same spectrum of parasites. The key difference is cost — WSD Fenbendazole 25 is cheaper than its alternative, offering the same benefits at a more manageable price point.

Can WSD Fenbendazole 25 be used on goats?

Yes, WSD Fenbendazole 25 is registered for use in goats. It controls susceptible strains of Ostertagia and Trichostrongylus in goats, along with the broader parasite spectrum listed above. Always refer to the Product Label for goat-specific dosages, as goats typically metabolise BZ drenches faster than sheep.

When should I drench with WSD Fenbendazole 25 Oral Anthelmintic?

WSD Fenbendazole 25 should always be used strategically, at key production points like pre-lambing, weaning, or when egg counts indicate a growing worm burden. Avoid drenching and immediately moving animals onto clean pastures unless you’ve confirmed that administration has been effective, as this can select heavily for resistant worms.

What’s more effective — single-action or combination drenches?

Where BZ resistance is confirmed or suspected, a combination drench containing actives from multiple groups (e.g., BZ, levamisole, and ML) will provide more reliable control. Single-active drenches like fenbendazole are best used where resistance testing has been conducted to confirm efficacy, or as part of a planned drench rotation strategy.