I bought XANTHAN GUM powder in the health food store to curb appitite..any thoughts?

I bought XANTHAN GUM powder in the health food store to curb appitite and would like to know if this really works. It is a thickening agent. I was told to take a teaspoon 2-3 times a day with water (makes a very thick paste) and take it after a normal meal. Any feedback?