Phenylephrine's Decline Sparks Doubt in Other Cold Medicines, Doctors Say

Doctors and researchers are questioning the effectiveness of many common over-the-counter treatments for the common cold and flu. Antihistamines, decongestants, cough medicines, and other remedies have limited evidence of improving symptoms. Concerns over the effectiveness of these products have prompted a review by the FDA, which has been slow due to regulatory processes. Many of these drugs have remained on store shelves without rigorous testing of their effectiveness. While some products may provide relief, experts recommend using single-ingredient products and relying on natural remedies such as saline nasal rinses and honey. Ultimately, the common cold often needs to run its course, and instant relief is unlikely.