Buckley's doesn't beat around the bush in describing its Cough Mixture: it tastes awful, but it works. We helped Saatchi & Saatchi NY convey this message in rich and 30k ad executions.
In the rich ad, users were prompted to enter the most disgusting thing they could think of. They then watched video of a blind taste tester comparing that thing to Buckley's Cough Mixture, and the results were laughable. Poor guy.