In brief: Homeopathy is a system of treatment developed in the early 19th century. Its basic assumptions differ from modern pharmacology. High-quality studies show no convincing specific effect beyond placebo and contextual effects.
How did homeopathy originate?
The German physician Samuel Hahnemann developed homeopathy at a time when many treatments were burdensome or dangerous. His approach relied on individually selected remedies, small starting quantities and lengthy consultations.
The historical context explains the method’s appeal but does not prove present-day efficacy. Medical procedures must be evaluated against current knowledge.
The similarity principle and potentisation
According to the similarity principle, a substance that causes certain symptoms in healthy people is supposed to treat similar complaints in sick people. In potentisation, a starting substance is progressively diluted and shaken.
High potencies are so diluted that often no molecule of the starting substance is expected to remain. A supposed “information of water” is not an established physicochemical mechanism of action.
What do clinical studies say?
Individual studies report positive results, but small samples, inadequate blinding and publication bias can exaggerate the impression. Systematic assessments of high-quality studies show no reliable specific benefit beyond placebo.
This does not mean that people imagine their improvement. Symptoms can fluctuate, resolve on their own or be influenced by personal attention, expectation and measures used alongside the treatment.
Why can the treatment still be experienced as helpful?
- Lengthy consultations and personal attention
- An understandable ritual and positive expectations
- The natural course of many mild complaints
- Simultaneous changes in rest, diet or stress
- Regression towards the mean after a particularly bad period
Where does the real risk lie?
Many highly diluted products have a low chemical risk. Homeopathy becomes dangerous when it replaces vaccination, diagnostic assessment, antibiotics, cancer treatment or other necessary measures. Low potencies may also still contain relevant quantities of a starting substance.
Serious symptoms such as breathlessness, bowel obstruction, seizures or severe mental health crises are not suitable for self-treatment.
Conclusion
Homeopathy has a significant cultural and medical history, but its specific efficacy is not convincingly established scientifically. For its dosage form, read Globules: manufacture, potencies and evidence.
Medical diagnosis should not be delayed for new, severe or persistent symptoms.
Source basis: NCCIH, NHS and systematic assessments by international health institutions. Editorial status: August 2026.
