Every mother's book, or The child's best doctor / by Alfred Fennings [1890]
The pattern
This still is filed under Borrowed medical authority.
Define
The claim wears a lab coat: a diagram, a percentage, a clinical tone that is not necessarily a clinician.
Mechanism
Authority costume. Science-looking form transfers trust. Use it only when the substance matches, or we are documenting a historical mechanism. We do not recommend the abuse.
Verdict
We have real evidence and the buyer needs it in a form they already trust: a chart, a protocol, a named standard.
Why it works
It empowers the mother by casting her as the best doctor for her child, simultaneously vilifying standard medical practices of the time (like prescribing calomel and deadly drugs). By positioning Fennings' remedies as safe, natural alternatives, it creates a strong emotional compulsion to buy them out of love and fear for the child's safety.
Steal this when
When you want to position a product as a safe, empowering alternative to a dangerous or confusing mainstream solution, especially when appealing to protective parents.