Kidney stones can be painful and the stones can vary in size. In order to pass a kidney stone fast, you can try a home remedy with banana stems. This recipe can help dissolve the stones and help to flush them from the system. Begin with one cup of banana stems, soaked in water for an hour to soften. Blend with 1/2 of a lime, 1 cup of water and strain to serve. Sweeten with a bit of honey or sugar and drink twice a week.