whats this SPOT.... is it for dogs?
?? can it be used as a preventive measure.
This is Coopers spot-on, which is not licensed for pigs in the UK, but is licenced for them in Ireland.
Vet's are permitted to prescribe medicines which are "off-label" or "off-ticket" (ie not licenced for the intended use or not licenced for the particular species), so lill's vet was able to let her use the product under his direction.
Spot-on is not licenced for use on pigs (but is for cattle and sheep) in UK, because under UK legislation the makers have to go through a long series of test to prove safety etc. and this is per species, so despite being approved for sheep and cattle, they would need to re-test for pigs and this along with high licence costs means you have to be sure of a good market before going to the expense. In UK the outdoor pig herd is not large enough and need for this product is obviously not high enough for Coopers (or more accurately Pfizer who make it) to go through the efforts and costs of licencing. In Ireland the licencing regime is less "Defra gold plated", so costs are low enough to make it worth selling.
PS whilst railing about costs, did you know that the "Defra approved" disinfectant that you use, costs the company £17,000 to renew their licence/approval every three years, despite no change in formulation - so £17,000 just to do the paperwork to let them carry on selling it. Sorry when I say "costs the company" I obviously mean "costs you and me" - cos we pay it back to the company. Apparently this helps fund the cost of the administration!!