Research results mean different things to the different sides of the argument about oral phenylephrine’s efficacy as a nasal decongestant, a discussion which could decide whether the ingredient remains available for the indication in the US under an OTC monograph.
Oral Phenylephrine Study Results Spell Nasal Decongestion Failure To Critics, GRASE To Industry
FDA officials, joined by supporters of deeming ingredient non-GRASE, note problems with research referenced in initial GRASE designation. CHPA explained studies used to support GRASE designation for phenylephrine hydrochloride in 1976, for addition of bitartrate salt in 2006 and other results published since show ingredient’s efficacy for nasal decongestion.

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