Depends on what you mean by "real medicines" and "really work". Homeopathy is way safer than any of the petroleum derived pharmaceuticals for anyone at any stage. If it is properly selected based on specific number of symptoms it can genuinely help people, and who cares if it due to placebo or by itself, its a win-win situation either way without any harm to the user and any dangerous side effects. On the other note the way pharmaceuticals are tested is incompatible with the paradigm in which homeopathy operates, so any of the usual tests are meaningless (not that they are truly meaningful in case of pharma products).