Ladybirder I asked my vet about this as Mac does exactly the same thing - he checked out the anti hist. I take which is Loratadine and it's okay for woofie to have one should he get stung. Mac weighs 20 kg. I beleive, but have no veterinery confirmation, that you can use Piriton instead, however, do not use Piriteze as it has an added ingredient dangerous to dogs. Can't remember exactly what but it begins with 'cete' I think.