Popular Nasal Decongestant Doesn't Actually Relieve Congestion, FDA Experts Say

Associated Press | By Matthew Perrone

WASHINGTON — The leading decongestant used by millions of Americans looking for relief from a stuffy nose is likely no better than a dummy pill, according to government experts who reviewed the latest research on the long-questioned drug ingredient.

Advisers to the Food and Drug Administration voted unanimously on Tuesday against the effectiveness of the ingredient found in popular versions of Sudafed, Allegra, Dayquil and other medications sold on pharmacy shelves.

"Modern studies, when well conducted, are not showing any improvement in congestion with phenylephrine," said Dr. Mark Dykewicz, an allergy specialist at the Saint Louis University School of Medicine.

The FDA assembled its outside advisers to take another look at phenylephrine, which became the main drug in over-the-counter decongestants when medicines with an older ingredient — pseudoephedrine — were moved behind pharmacy counters. A 2006 law had forced the move because pseudoephedrine can be illegally processed into methamphetamine.

Does evidence show a benefit?

If the FDA follows through on the panel's recommendations, Johnson & Johnson, Bayer and other drugmakers could be required to pull their oral medications containing phenylephrine from store shelves. That would likely force consumers to switch to the behind-the-counter versions of the pills or to nasal sprays and drops that contain phenylephrine, which are not under review.

This week's two-day meeting was prompted by researchers at the University of Florida, who petitioned the FDA to remove phenylephrine products based on recent studies showing they failed to outperform placebo pills in patients with cold and allergy congestion. The same researchers also challenged the drug's effectiveness in 2007, but the FDA allowed the products to remain on the market pending additional research.

That was also the recommendation of FDA's outside experts at the time, who met for a similar meeting on the drug in 2007.

This time, the 16 members of the FDA panel unanimously agreed that current evidence doesn't show a benefit for the drug.

"I feel this drug in this oral dose should have been removed from the market a long time ago," said Jennifer Schwartzott, the patient representative on the panel. "Patients require and deserve medications that treat their symptoms safely and effectively and I don't believe that this medication does that."…

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