Doctors and researchers question the efficacy of many common over-the-counter treatments for colds and flus. Jeff Greenberg/Jeffrey Greenberg/Universal Images hide caption
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Doctors and researchers question the efficacy of many common over-the-counter treatments for colds and flus. Jeff Greenberg/Jeffrey Greenberg/Universal Images hide caption
Sudafed and other common nasal decongestants containing pseudoephedrine are on display behind the counter at Hospital Discount Pharmacy in Edmond, Okla., Jan. 11, 2005. AP hide caption