The post title is 'sugar free sweets', so OP is not looking for hypo treatments.
Personally, I found out the hard way that most of them use sorbitol or other things ending -itol, and that the tiny warnings printed on the package that "excessive consumption may cause laxative effects" was a gross understatement. I would avoid them, if I were you.
What I did find was that after a while of not having sugar in tea, and not eating/drinking sweet things in general is that my taste changed and if I fancy something to nibble on, I'm more likely to eat cheese or 85% cocoa chocolate.