Samuel Hahnemann in the late eighteenth century gave us formalised homoeopathy. The principle of treatment that a medicine which creates similar symptoms, which are also produced by the disease are treated by that medicine. This principle has been recorded since classical Greek times. This principle is called LIKE CURES LIKE . Hahnemann carried on his work and investigations tirelessly, but could not accumulate enough evidence of medical cure using this system. It was in 1812 when he could show the results of homoeopathy by treating 180 cases of Typhus. Since then the effectiveness of homoeopathy has been proved in a very very large number of patients. The same principle has been extended to all kinds of life including animal life.