Homeopathy is a worthless means of sustaining your health. In terms of preventing or treating disease, it’s up there with bloodletting or erecting a shrine to Asclepius in your pantry. It is literally good for nothing from a medical perspective.
That was the conclusion of a report from Australia’s National Health and Medical Research Council (NHMRC), albeit not precisely in those words. After reviewing numerous studies, as well as information submitted by supporters of homeopathy, the NHMRC (similar to the National Institutes of Health in the United States) found there is nothing valid to substantiate that homeopathic treatments do anything at all for those who take them. In the words of their summary statement (PDF), “there are no health conditions for which there is reliable evidence that homeopathy is effective.”
It doesn’t get much more definitive than that.