Phenylephrine is a medication that’s been used to relieve nasal congestion caused by colds, allergies, and hay fever, per the ...

Sudafed, Mucinex, Benadryl, Advil, Tylenol, Vicks, and Dimetapp. These popular brand names appear on oral decongestants that are staples of the cold and flu aisle in American drug stores, and yet many ...

Phenylephrine is included in many cold and flu products, but a scientific panel last year found that it doesn't really do its ...