Homeopathy 2003; 92(01): 30-34
DOI: 10.1054/homp.2002.0069
Education and Debate
Copyright © The Faculty of Homeopathy 2003

Mutual information and the homeopathic effect

R Waldo
J-L Torres

Subject Editor:
Further Information

Publication History

Received06 March 2002
revised17 June 2002

accepted15 July 2002

Publication Date:
27 December 2017 (online)


We explore the feasibility of using mutual information to characterize the homeopathic effect. This quantity measures the information gained about a signal at time (t + τ), from its value at an earlier time t; it quantifies the predictability of data. We illustrate our method with an analysis of the homeopathic effect of Strophantus hispidus on the cardiac rhythm of healthy human subjects, using data from a previous experiment. Our results allow an intuitively clear rendering and agree with the similitude principle applied to this case. They also show that the solvent has a significant effect on the signal; hence, it does not act as an ideal placebo and we discuss some therapeutic corollaries to this observation.