WASHINGTON (AP) -- Changes are coming to the cold and cough aisle of your local pharmacy: U.S. officials are moving to phase out the leading decongestant found in hundreds of over-the-counter medicines, concluding that it doesn't actually relieve nasal congestion.

Phenylephrine is used in popular versions of Sudafed, Dayquil and other medications, but experts have long questioned its effectiveness. Last month the Food and Drug Administration formally proposed revoking its use in pills and liquid solutions, kicking off a process that's likely to force drugmakers to remove or reformulate products.

It's a win for skeptical academics, including researchers at the University of Florida who petitioned the FDA to revisit the drug's use in 2007 and again in 2015. For consumers it will likely mean switching to alternatives, including an older decongestant that was moved behind the pharmacy counter nearly 20 years ago.

Doctors say Americans will be better off without phenylephrine, which is often combined with other medicines to treat cold, flu, fever and allergies.