I couldn't find data sheet on milbemax website last night but found one here:
It says:
The margin of safety in Collies and related breeds is less than in other dogs. In these dogs, the recommended dose
should be strictly observed.The tolerance of MILBEMAX in young puppies from these breeds has not been investigated.
Clinical signs in Collies are similar to those seen in the general dog population when overdosed.
Worms:
Uses
MILBEMAX is a broad spectrum wormer indicated in the dog for the treatment of mixed infections by the adult
cestodes and nematodes of the following species:
Cestodes: Dipylidium caninum, Taenia spp., Echinococcus spp., Mesocestoides spp
Nematodes: Toxocara canis, Toxascaris leonina, Ancylostoma caninum, Trichuris vulpis.
Crenosoma vulpis(reduction of the level of infection),
Angiostrongylus vasorum (reduction of the level of infection; see specific treatment schedule under dosage and
administration).
Milbemax can also be used in the prevention of heartworm disease (Dirofilaria immitis), if concomitant treatment
against cestodes is indicated. In this case the product should be administered monthly.
I don't know the latin names

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does this cover all worms ie no other worm treatment required for tape/lung/heart/hook/pin/round worms? If so then worth getting from vet.I was thinking about getting my collie DNA tested, so will look into this faulty gene for peace of mind.