Potato juice from raw potatoes is a great help to anyone that is dealing with any form of arthritis. It has been used for hundreds of years and is still in use today. All that you will need to do is take a medium sized potato (even a large potato can work for this). Cut the potato into very thin slices. You may even need to use a vegetable slicer to make it easier. Just be sure that when you cut the potato into slices, that you do not peel the skin of the potato off. After you have finished slicing the potatoes, set them aside for the moment. Grab a large mixing bowl and fill it halfway with cold water (try to get the water as cold as possible). Place the slices of potato in the bowl and let them soak overnight. In the morning, take the potato slices out and pour some of the water into a glass. Drink the glass of potato juice before you eat breakfast.