Pepto is a go-to in my house. Pretty much the cure for anything "belly" wise. Pro tip though, don't chew them before going to bed without brushing your teeth after, your mouth will turn black from chemical reaction to saliva.
It's sort of like an interesting "thump" massage. I found I had to have it on a higher setting in order to feel anything at all. Helps with my lower back pain, and the sticky pads are good for a few uses each, which is helpful for your pocket