There have been similar things observed in a Tuberculinum reproving.
It was even in individuals, which were only taking the placebo.
Thje proving was not done in a group. No-one knew the remedy to be proven.

It was alledged, that the close proximity of the two substances could have lead to an information transfer from one glassbottle to another.

In order to exclude this possibility Spagyros Homeopathic Pharmacies Switzerland have their remedies doublepacked. This means, that the actual container is in another one,which guarantees at least 5-7mm distance to the outer wall of the second container.
According to their findings-this prevents the ''picturing''.
they have been doing this for more than 30 years.
Other Pharmacies, who I have aproached about this problem, have not followed this example.

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Hans Weitbrecht
Consultant Homeopath