We brought Nova to the vet this morning for a spraying problem he's recently developed. We wanted to make sure he was checked all over and that no infection was present. Tests all came back good. We've always had Feliway going and have never had any problems like this with our kitties, however since Buster has come into the picture, Shadey & Imhotep will sometimes pick on Nova who has always been on the bottom of the kitty totem pole. We provided an extra litter box downstairs just in case as well (our large Rubbermaid tote bins we use as litter boxes are upstairs) but today the vet prescribed amitriptyline for him as he is a very high strung cat. I would just like to hear from other people who have experience with cats and this drug.