Modern medicine has reached new heights in the 21st century thanks to all the modern technologies that allow for advancements in medical research. Medicine has its roots in ancient times when plants and other natural resources were used for healing diseases. Homoeopathy is one such branch of medicine. In the 18th century, homoeopathy was established as a medical field. Samuel Hahnemann, a well-known German doctor, was the man who created homoeopathy. Homoeopathy was founded on the principle that "like cures like".