this is out side the box.. but in some studies CLA has been shown to improve feed ratio which means you can theoretically use the nutrients you ingest better, thus improving fat loss and possibly inhancing muscle mass.
this in and of itself will not do anything for your appetite, how ever it may help you keep your diet working better when you do falter. Finaflex offers a product that combines ALC with CLA, and taking ALC can improve cognitive function and help mobilize fat from both storage and dietary intake. but over time the effects on mood can really help improve your outlook on dieting. a lot of times its the stress from everyday life that can cause you to loose control so being in a good mood may really help your situation.
there are some fat burners out there that really do kill your appetite but not many that will directly effect it with out stimulation ..
perhaps Hoodia may help but I havnt had good luck with it myself so im not sold it will work.