Zerofen Worm Drench 2.5% w/v Oral Suspension for Sheep and Cattle

Care should be taken to avoid the following practices because they increase the
risk of development of resistance and could ultimately result in ineffective
therapy:
•
an extended period of time.
•
misadministration of the product, or lack of calibration of the dosing device
(if any).
Suspected clinical cases of resistance to anthelmintics should be further
investigated using appropriate tests (e.g. Faecal Egg Count Reduction Test).
Where the results of the test(s) strongly suggest resistance to a particular
anthelmintic belonging to another pharmacological class and having a different
mode of action should be used.
Resistance to benzimidazoles has been reported in Teladorsagia, Haemonchus,
Cooper and Trichostrongylus species in small ruminants. Therefore, the use of
this product should be based on local (regional, farm) epidemiological
information about susceptibility of nematodes and recommendations on how to
limit further selection for resistance to anthelmintics.

Shake container before use.
i. Special precautions for use in animals
Intensive use or misuse of anthelmintics can give rise to resistance.
To reduce this risk dosing programmes should be discussed with
your veterinary advisor.
ii. Special precautions to be taken by the person administering the
veterinary medicinal product to animals
Direct contact with skin should be kept to a minimum. Wear suitable
protective clothing including impermeable rubber gloves. Wash hands
after use.