Abstract
Background and Objectives Over the past decade, research using various methods has claimed the material nature,
including nanoparticles (NPs), of high homeopathic potencies. The current study aims
to verify these findings using NP tracking analysis (NTA).
Methods Six independent serial dilutions of commonly used homeopathic medicines—either soluble
(Gelsemium, Pyrogenium, Kalium mur) or insoluble (Cuprum, Argentum, Silicea)—were prepared according to European Pharmacopoeia standards. We compared the homeopathic
dynamisations (DYNs) in pure water with their potentised controls and with simple
dilutions (DIL) up to 30cH/10−60. We also tested the influence of the container (glass or PET) on the solvent controls.
Results We observed the presence of particles from 20 to 300–400 nm in all DYNs, DILs and
controls, except in pure unstirred water. The sizes and size distributions of NPs
in high homeopathic potencies were smaller than those in controls for soluble sources
and larger for insoluble sources, even above 11cH. The opposite behaviour was observed
in the number of NPs. When comparing DYN and DIL, the number, size, presence of aggregates
or chains and brightness of NPs increased with DYNs, which was also observed above
11cH. Many NPs scattered light of low intensity, indicating the presence of material
particles. The container had a significant effect on the number and size of NPs, indicating
the involvement of the atmosphere and leaching processes.
Conclusion Homeopathic medicines contain NPs with specific properties, even when diluted beyond
Avogadro's number. Homeopathic potentisation is not a simple dilution. The starting
material, the solvent used, the type of container and the manufacturing method influence
the characteristics of these NPs. The nature of these NPs is not known, but most likely
they are a mixture of nanobubbles and elements from the atmosphere and container,
including insoluble ones.
Keywords
nanoparticles - nanobubbles - homeopathic medicines - ultra-high dilutions - potentisation
- dynamisation - nanoparticle tracking analysis