Feed Premix


Fenbendazole 40 mg/ g


Fenbendazole acts against parasites by disrupting the formation of microtubules by binding to tubulin in parasitic intestinal cells hence preventing the absorption of glucose. Parasites are gradually starved to death.

Fenbendazole is active againstáa large number of gastrointestinal parasites in the stomach and intestines of animals. It is active against round worms, ankylosomes, trichuris, certain tape worms, strongyles and stronglyoides and also against lungworms. Fenbendazole is active against adult and immature stages, and also against inhibited L4 larvae of Ostertagia spp.

Fenbendazole is poorly absorbed. Maximum plasma concentration is reached within about 20 hours and the parent drug is metabolised in the liver and eliminated within 48 hours. The main metabolite, oxfendazole, also possesses anthelmintic activity.


HUNTER 4 premix is indicated for the treatment of gastrointestinal and pulmonary nematodes in the adultá and immature stages. HUNTERá 10 DRENCH also kills eggs.


Not to be used in animals with a history of hypersensitivity towards the active ingredient.



Standard dose rate is 5 mg fenbendazole per kg bodyweight. Hunter 4 Premix is a suitable herd medication for all pigs or individual medication of pigs over 75 kg bodyweight. All methods of treatment are equally effective.

Routine Treatment- Herd Medication

Hunter 4 Premix may be given in feed to pigs either as a single dose or by divided doses over 7 days. It may also be administered to sows over a period of 14 days.

- Single Dose Treatment:

Growing and Finishing Pigs: mix 2.5 kg HUNTER 4 Premix into 1 tonne of complete feed.

Sows of 150 kg b.w.,áeach consuming 2 kg medicated feed: mix 9.375 kg HUNTER 4 Premix into 1 tonne of feed, which will treat 500 sows on a single occasion.

Sows of 200 kg b.w., each consuming 2.5 kg medicated feed: Mix 10 kg HUNTER 4 Premix in 1 tonne of feed for 400 sows on a single occasion.

- 7 Day Treatment:

Growing and finishing pigs: Mix 360 g premix per tonne of feed to administer to 95 pigs.

Sows: Mix 1.340 kg premix per tonne of feed to administer to 70 sows.

- 14 Day Treatment:

Sows 150 kg: Mix 536 g premix per tonne of feed to administer to 28 sows.

Sows 200 kg: Mix 714 g premix per tonne of feed to administer to 28 sows.

Routine Treatment- Individual Medication:

Hunter 4 Premix may be added to a feed for individual pigs at a rate of 9.375 g (one measure) premix, sufficient to treat one pig of 150 kg bodyweight.

Suggested Dosing Routines:

Sows: Treat before entering farrowing accomodation and again at weaning in order to maintain the sow’s condition and reduce risk of infection to her piglets.

Boars: Treat every 6 months.

Growing and Finishing Pigs: Treat weaners on purchase or on movement to finishing house. Where the risk of ascariasis (Milk Spot Liver) is high, repeat treatment monthly.

Whole Herd: Treat all adult and young stock simultaneously every 6 months to minimise risk of re-infestation at the same time as paying careful attention to environmental hygiene.

Outdoor: Treat pigs before moving onto clean grazing if available.


Standard dosing rate is 8 mg fenbendazole per kg bodyweight. Hunter 4 Premix may be given in feed either as a single dose or divided doses for 3 or 6 days.

- Single Dose Treatment: mix 2.50 kg Hunter 4 per tonne of feed.

- 3 Day Treatment: mix 1.50 kg Hunter 4 per tonne of feed.

- 6 Day Treatment: mix 750 g Hunter 4 per tonne of feed.


No adverse effects known if used at therapeutic doses.


Feed mixers or mill hands should wear protective gloves and filtering masks. To ensure thorough mixing, HUNTER 4 should first be mixed with 2.5 kg of feed for every tonne of medicated feed being made. This should then be incorporated with remaining feed.

Medicated feed may be pelleted after preconditioning with steam at temperatures not exceeding 75 degrees centigrade.

Do not add to liquid feeds or supplements.

HUNTER 4 should remain stable in feed for 3 months.

Dispose of used containers (and unused medicated food) safely.

Keep out of the reach of children.

Wash hands etc. after work.


10 kg buckets.

Please be aware that product specifications and availability can differ between countries. For detailed information in this regard, please contact us.


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