Phenylephrine became the main decongestant in over-the-counter cold and allergy medicines in 2006, when sales of another decongestant, pseudoephedrine, were restricted in the U.S ...
The FDA proposed discontinuing the use of phenylephrine, an ingredient in common medications like Sudafed, because it 'is not effective' in treating cold and flu symptoms.
The decongestant in question is phenylephrine, which is found in popular cough and cold products, including Benadryl Allergy Plus Congestion, Sudafed PE Sinus Congestion and Vick's DayQuil.
phenylephrine’s effectiveness as a nasal decongestant.' The FDA noted ... A few months after that study was published in the Journal of Allergy and Clinical Immunology, University of Florida ...