Actually, the laws of chemistry state that there is a limit to the dilution that can be made without losing the original substance altogether. This notion is unsubstantiated. The is then filtered, freeze-dried, rehydrated, repeatedly diluted, and impregnated into sugar granules. If a single molecule of the duck's heart or liver were to survive the dilution, its concentration would be 1 part in a huge number having 400 zeroes. It has been claimed homeopathic products resemble vaccines because both provide a small stimulus that triggers an immune response.
Immunizations produce antibodies whose concentration in the blood can be measured.
Homeopathic products produce no measurable response. Vaccines are used preventively, not for curing symptoms. Unlike most potent drugs, they have not been proven effective against disease by double-blind clinical testing. The vast majority of homeopathic products have never even been tested. Homopathic studies emerge from time to time claiming to show benefit.