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The Phenylephrine Controversy: What You Need to Know!

J. A. Jackson Author
3 min readOct 26, 2023

In the world of over-the-counter cold medicines, a significant shakeup is taking place, leaving consumers puzzled and questioning the effectiveness of the products they’ve trusted for years. The recent decision by the FDA has cast a shadow of doubt over the role of oral phenylephrine, a common ingredient in cold remedies like Dayquil, Mucinex, and Sudafed PE. This surprising turn of events has ignited a hot debate within the healthcare community.

Introduction:

In the midst of a rapidly changing landscape in the world of over-the-counter cold medicines, a series of unexpected events have reshaped the industry’s dynamics. As the saying goes, “The devil is in the details,” and this cascade of events has left consumers and healthcare professionals on edge.

In the Beginning:

It all started with Dr. John Hendeles, a renowned pharmacologist from Florida. He became the first person to challenge the long-standing belief in the effectiveness of oral phenylephrine, an ingredient commonly found in various over-the-counter products designed to combat upper respiratory symptoms. Dr. Hendeles argued that oral phenylephrine, which is a key component of products like Dayquil, Mucinex, and Sudafed PE, is ineffective as a decongestant. He stated, “It is only the oral route that is not effective because 99% of the parent drug is inactivated in the gut and during the first pass through the liver.”

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J. A. Jackson Author
J. A. Jackson Author

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