Lurchers why didn't you take a water sample?,Metacam what size 32ml,100ml,180ml? and mutch do they charge for a prescription?,honest mate we have got to fire questions at the vets and get 1-3 different options from them I ask for a specific vet up on running/working dogs have a list of questions and ask for a print off for that particular consultation they have diagnonsed/prescribed, etc,people do not be rushed by vets.