Maybe not medications, but people generally write off benign symptoms quickly, and a series of benign symptoms can often be an indication of something more serious.
Then that person sees a commercial and it lists all the symptoms they’ve been having at once and it makes them go “Hey wait a minute, all those symptoms sound familiar, maybe I should make an appointment”
Iirc there was a study a few years ago that determined that medication commercials can increase the rate people see doctors.