
I have never liked it and always tried to get pseudoephedrine, which actually works.
Link to article

A Decongestant in Cold Medicines Doesn’t Work at All, an F.D.A. Panel Says (Published 2023)
The agency now must decide whether products containing the ingredient, like some Sudafed and NyQuil products, should no longer be sold or perhaps give companies lead time to substitute other ingredients.