[Scientability - a concept for the handling of homeopathic remedies by EbM].

Evidence-based medicine (EbM) has proved to be very useful in healthcare; thanks to its methodology the reliability of our knowledge of the benefits and harms of interventions can be assessed. This at least applies to interventions which are based on a plausible concept for their mechanism of action and which have already achieved positive effects in experiments and simple studies. However, for interventions whose concepts contradict scientific findings EbM has proved to be unsuitable; it has not been able to prevent that they are still regarded as effective amongst wide parts of the population and medical experts. Particularly homeopathy has managed to even present itself as scientifically justified by using EbM. With the aim of highlighting the speculative character of homeopathy and other procedures and of preventing EbM from getting damaged, the concept of scientability is introduced in this article. This concept only approves of clinical studies if the intervention that is to be tested does not contradict definite scientific findings.