Which acid reflux medication became famous through a marketing campaign that branded it as the distinctive 'Purple Pill', leading to unprecedented brand recognition in the pharmaceutical industry?

In the world of pharmaceutical marketing, certain campaigns have transformed how medications are advertised to both healthcare professionals and consumers. The early 2000s saw a revolution in direct-to-consumer pharmaceutical advertising, with several iconic campaigns that changed the industry landscape. This poll tests your knowledge about one of the most successful pharmaceutical marketing campaigns that created a strong visual brand identity for an acid reflux medication.

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Nexium (esomeprazole)
Prilosec (omeprazole)
Zantac (ranitidine)
Prevacid (lansoprazole)