Homeopathy is a system of healing that was discovered over 200 years ago by the German physician and chemist Samuel Hahnemann. It is based on the principle of "like cures like," which means that you can heal a malady with a small amount of a substance which, in larger doses, would cause the same illness. By giving a small amount of this substance in a remedy form, it stimulates a curative response in the body. For example, a commonly used remedy for allergies is Allium Cepa, which is made from onions. We all know the streaming and burning eyes that you get when you chop onions. If you get allergy symptoms characterized by watery, burning eyes and nose, the remedy "Allium Cepa" will fix you in no time.