[Homeopathy in the perspective of scientific research].

A significant portion of the traditional concepts of homeopathy (similia principle, experimentation on healthy humans, the cure of whole person, the use of minimum doses or high dilution/potency of medicines) are amenable to investigations conducted according to criteria accepted by biomedical science. Even though many randomized and controlled clinical studies seem to demonstrate the efficacy of some homeopathic medicines and their superiority to placebo, other trials have given negative results. A definite clear answer is not yet possible due to the scarce quality of some published reports, to lack of reproduction by independent investigators and to the uncertainty regarding the methodologies to be used for testing the claims of homeopathy. As regards the possible physiopathological, biophysical and pharmacological explanations for the action of homeopathic remedies, there are models which tend to set the similia principle as a general expression of the action-reaction principle, within the context of dynamic systems theory. The clarification of the more controversial aspects regarding dilution/potency of medicines remains tied to several promising developments in physics of condensed matter, in chaos theory and in biophysics.