I've never tried periactin. I do believe that injected valium (I'm pretty sure it's valium I am thinking of) is a great appetite stimulant, but... it's an injection, so it's something you have to go to the vet for, thus, not good for anything long term. I do think you should try it, you don't really have anything to lose. The next step would be either syringe feeding or tube feeding.
Phaewryn http://ucat.us The easy way out has a bad reputation. Why would anyone take the hard way out? "The door? No thanks, that would be the easy way out. I'm jumping out the window." Quote by: Les U. Knight