Homeopathic Medicine is a system of medicine founded in the early 19th century by German physician Samuel Hahnemann. It is based on the principle that "like cures like," meaning that a substance that can cause symptoms in a healthy person can be used to treat similar symptoms in a sick person. Homeopathic remedies are made by diluting a substance derived usually from plants and minerals in a series of steps, usually with water or alcohol, until only a fraction of the original substance remains. By using ultra, energetic doses, homeopathic is generally found to be extremely safe in patients of all ages.