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Scientists knew phenylephrine was useless—but you’ve been using it for decades

Summary by National Geographic
More than 200 over-the-counter decongestants contain a key ingredient that was just revealed to be ineffective—and cold and flu season is just around the corner. Now what?

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National GeographicNational Geographic
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Scientists knew phenylephrine was useless—but you’ve been using it for decades

More than 200 over-the-counter decongestants contain a key ingredient that was just revealed to be ineffective—and cold and flu season is just around the corner. Now what?

·United States
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National Geographic broke the news in United States on Tuesday, May 20, 2025.
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