Homeopathy 2007; 96(03): 143-150
DOI: 10.1016/j.homp.2007.05.006
Copyright © The Faculty of Homeopathy 2007

The Memory of Water: an overview

Martin F. Chaplin

Subject Editor:
Further Information

Publication History

Received10 May 2007
revised23 May 2007

Publication Date:
21 December 2017 (online)


The ‘memory of water’ is a concept by which the properties of an aqueous preparation are held to depend on the previous history of the sample. Although associated with the mechanism of homeopathy, this association may mislead. There is strong evidence concerning many ways in which the mechanism of this ‘memory’ may come about. There are also mechanisms by which such solutions may possess effects on biological systems which substantially differ from plain water. This paper examines the evidence.