I keep some SF Orbit labeled gum in the office and at home. I use it mostly for teeth cleaning once and a while (works!) - I'm kind of anal and spit out the first few mouthfuls of saliva.

Not sure about appetite stimulation as I usually use it AFTER I have eaten. Usage: 1-2 times a week.

NOTE: I use to be a chronic gum chewer - I think it was mostly from habit. I see nothing wrong with it and only have 2 cavities at 53 years. GET YOUR CHEW ON