Homeopathic treatment involves evaluating the patient's physical symptoms as well as the mental and emotional state Homeopathy doctors are called homeopaths. The ingredients used by homeopaths in a medicine are so diluted that analysis of the ingredients does not reveal the original ingredients. How does homeopathic medicine work? Samuel Hahnemann, the inventor of homeopathic medicine, said that homeopathic medicines have a spirit-like power. A particular type of material is said to be diluted by successively dissolving it in alcohol or water according to several rules and then applied.