Pinch the wadded up cellophane pill, quickly pop it in your mouth and swallow.
The lemon juice and baking soda inside will mix and expand the balloon inside your stomach, having much the same effect as a stomach stapling, except without the staples, and surgery, and scarring, et cetera.
Eventually
the acid in your stomach eats through the balloon skin, popping it, allowing it to pass through.
They come in all different shapes and colours to differentiate between displacement amounts and time before dissolution.
Tastier than tofu.