Summary
The FDA has proposed removing oral phenylephrine, a common ingredient in over-the-counter cold medicines like NyQuil and Sudafed, due to evidence that it is ineffective as a nasal decongestant.
The proposal follows a unanimous vote by FDA advisers last year, and recent studies showing less than 1% of the drug is absorbed into the bloodstream when taken orally.
The public comment period ends on May 7, after which the FDA may finalize the ban.
Blame congress.
https://en.wikipedia.org/wiki/Federal_Food,_Drug,_and_Cosmetic_Act_of_1938#Homeopathic_medications