You dont have to buy the Panacur Liquid from your Vet. You can buy it online.
It contains exactly the same active ingredient ( Fenbendazole ) as the paste but is much more economical when treating multiple Rabbits. It is just that the paste is actually licenced for use in Rabbits whereas the Liquid is not. This is not because the liquid is 'unsafe' but just that the (costly to the manufacturer) licencing procedure has not been done.
I use the Panacur 10% Liquid at a dose of 0.2ml/kg ( 20mg/kg )
http://www.wormers.co.uk/acatalog/O...mers_16.html?gclid=CMmDvOuRppMCFQ1KQgodiBVKoQ
Janex