FYI: βIn a unanimous vote, advisors said oral versions of phenylephrine β found in versions of drugs like Nyquil, Benadryl, Sudafed and Mucinex β aren't effective. The FDA could potentially begin a process that removes phenylephrine from the market, which would force manufacturers to pull cough and cold medications from store shelves.β
https://www.cnbc.com/2023/09/12/decongestant-phenylephrine-ineffective.html