Add Yahoo as a preferred source to see more of our stories on Google. A Food and Drug Administration-assembled board of advisers has determined that the most popular decongestant ingredient on the ...

Pseudoephedrine is more effective for nasal congestion than phenylephrine. Oral phenylephrine does not effectively treat congestion. Pseudoephedrine products have purchase restrictions and require a ...

Phenylephrine, a common ingredient found in many over-the-counter cold medications, has long been thought to be a reliable decongestant. However, recent studies are questioning its effectiveness, ...