Discover why oral phenylephrine in cold medicine is ineffective for relieving congestion. Learn which alternative treatments ...

The FDA reveals that phenylephrine, a popular decongestant, is no better than a placebo. Discover what this means for your cold remedy.

and 125 mL of cold water in the third clean cup. Use an oven mitt or potholder when handling the hot tap water. As you start the stopwatch, place one whole Alka-Seltzer tablet into each of the three ...