An account of that most excellent medicine the cordial balm of Gilead [and other patent medicines] / [Samuel Solomon].
The pattern
This still is filed under Problem-agitate-solve.
Define
Name the problem, make the cost of leaving it felt, then present the way out as relief.
Mechanism
Tension then release. The offer is not an interruption. It is the only door once the cost of staying is clear.
Verdict
The problem is known but not yet urgent
Why it works
It uses vague but frightening language ('nervous weakness', 'early imprudence') to target people with embarrassing or chronic ailments, offering a cure-all with the promise of strict secrecy (allowing ordering under pseudonyms). Testimonials provide evidence for a wide variety of successful cures.
Steal this when
Selling a discrete solution to an embarrassing or sensitive problem.