Homeopathic remedies are obtained from mineral, vegetable and animal substances. Each remedy is subjected to a specialised refining process. This process involves dilution and shaking. A substance can be diluted and succussed many times and this process is called potentisation.
Each new homeopathic medicine undergoes a particular process called a ‘proving’, where volunteers or ‘provers’ take the new substance. The provings are performed using "double blind" conditions, so that provers do not know the name of the remedy they have been taking.
The remedy is given until the provers experience psychological and physical symptoms. All the symptoms are collated and compared in order to build up a complex symptom picture of the new remedy. So that Homeopathic Materia Medica is based not on speculation, but on the actual psychological and physical effects of the remedies on human beings. Homeopathic medicines are not tested on animals.