Actually, Alice, research shows different. This, from the link above:

>In 1997, The Lancet published a thorough meta-analysis which showed that, of 89 clinical >trials, 44 reported homeopathy to be significantly more effective than placebo;1 none of the >89 trials found placebo to be more effective than homeopathy. Even accounting for any >publication bias towards 'positive' trials, the authors came to the conclusion that clinical >benefit from homeopathic therapy cannot be explained by the placebo effect alone.

Bottom line, though, Alice, is that nothing that anyone asserts about what may or may not be happening, it does work.   Check this The Treatment of Epidemics with Homeopathy