What counts as responsible use of 'spot ons?

28 Nov 2020

Loeb, J.

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Antibiotics are often the first products that spring to mind whenever a discussion starts about the responsible use of medicines.

Recent years have seen steady progress to reduce usage in the UK’s farm animal sector (see page 424), with similar sector-specific targets now being rolled out to the companion animal and equine sectors.

But there is growing appreciation of the need to reduce, refine or replace the use of other veterinary medicines too.

For example, vet leaders have previously talked about the need to ‘think smart’ on anthelmintics (VR, 21 March 2020, vol 186, p 338) because of escalating resistance among endoparasites.

But while the evolution of treatment-resistant fleas and ticks is certainly possible, it is not much of a concern in reality; instead, the desire for a shift towards responsible use of ectoparasiticides is borne primarily out of concern about their environmental impact.

One study found high concentrations...