The answer is actually very simple:
Homeopathy doesn't work.
Firstly, it doesn't work, because it can't - there is physics and chemistry that say there is nothing to work there.
Secondly, it does not work as it has been demonstrated that it does not work even on laws and principles unknown to us - well-designed studies do not demonstrate the effectiveness of homeopathy higher than placebo.
But in the Hahnemannian form - without mind-blowing dilutions modern homeopaths - it might work in certain cases. But this is not a general principle, but from case to case. The introduction of a small (but real) dose of some substance, provoking, for example, an increase in blood pressure can, in principle, trigger a reaction of the body, the effect of which - a decrease in pressure will exceed the initial harmful effect of the original substance. Key: the substance must be. Key 2: it is necessary to check whether this is so in the case of a given disease and a given substance in each case separately. Maybe the body does not have the correct answer to table salt, and the introduction of 0.1 mg of salt just slightly increases the pressure. In this case, the body may have a correct response to caffeine, and the introduction of 0.1 mg of caffeine will cause a compensatory decrease in pressure .. Each case is separate. Treating like like like might work in some cases. Treatment of something with nothing - cannot reliably work. This is what the research shows.
If someone started a rumor that it is useful to drink horse blood or eat lined pieces of paper from school notebooks for mathematics, and some paramedics would pick up, then instead of homeopathy, we would have this. Moreover, people would believe, and the placebo effect would do its job.
I really liked the example that Asya Kazantseva used, describing the whole essence of homeopathy. In short, take a shot of vodka and dilute it 12 times 1: 100. In toga we will get several liters of water. According to the logic of homeopathy, the more we dilute, the more it helps. This means that the more we dilute the vodka, the stronger it will hit the head. Hmm-hmm ... No further comments.
If you want more details, here is an excerpt from Asya's own monologue: “We took half a glass of vodka, and now we need to give this half a glass of vodka a drink for the entire audience here. .. if we tried to get our entire audience drunk, like Jesus Christ feed everyone with five loaves of bread and two fish, what would we have to do? We would start making homeopathic dilutions. If we believe Samuel Hahnemann [the founder of homeopathy], then we must understand that the more we dilute the substance, the more intense its medicinal power, the better it works. That is, in this case, apparently, causes intoxication. We, one way or another, began to dilute it. [We dilute our alcohol 12 times in 100 times, in the end] then 0.6 molecules of alcohol remain there. That is, with a probability of 60%, some alcohol molecule will be present in this glass. In general, it is quite problematic to drink a person with this homeopathic alcohol, especially the entire audience, but on in fact, if we recall now what homeopathy is used for at all, homeopathy is used to heal symptoms. And it is clear that if we take a drunk person and give him homeopathic alcohol in the form of water with 0.6 molecules of alcohol, then, in principle, this should help him. "
Just like a placebo - a person believes in the result and in a certain number of cases this leads either to a positive result (real or felt).
Read more here
Interested in the mechanism of action.