A homeopathic remedy is tested by means of what Hahnemann referred to in German as a prüfung - defined as an experiment or test to determine the medicinal potential of a substance.

A prüfung is commonly called a proving amongst the homeopathic community today. The volunteers who agree to undergo the testing of a new remedy are known as provers. They assess the latent curative capacity of a medicine by taking it in potentised form themselves, until they start to produce symptoms. All the symptoms of the proving group are thoroughly documented. The information gathered is then synthesised to form a 'disease picture' of the remedy. In this way, provings make known to us the curative and healing properties of a great variety of natural substances that can then be added to the homeopathic pharmacy. 

To date, I have participated in two provings. The experience was remarkable. A homeopathic proving takes you on an inner journey, where you come to understand the essence of the natural substance under investigation.

The Homeopathic Proving of Zamzam is one I conducted and authored myself. All proceeds go towards charity.