In May 2014, Pfizer introduced Nexium 24HR, one of the topselling acid blockers, over the counter in the United States. Nexium has been a leader in prescription acid blockers for more than 10 years, and its approval to be sold as an OTC medication makes it much more accessible to consumers. Nexium has clearly found its place in the OTC antacid category in the short time it has been available, but how have other top brands responded? How has this introduction affected both retailers and consumers?

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