A "reminder" advertisement serves primarily to build brand recognition rather than promote the drug's uses and benefits. A reminder ad cannot contain any information or imagery that pertains to the drug itself, including benefits or how it functions, but may still contain a call to action urging viewers to ask their doctor or seek an external resource for more information. Reminder ads may include themes that vaguely allude to the drug's purpose: for example, a reminder commercial for the erectile dysfunction drug Viagra featured the showtune "Good Morning" and scenes of a man happily walking to work, emphasizing a sexual innuendo in the lyric "it's great to stay up late".