Decongestants can sometimes cause more harm than good

white nasal spray bottle closeup in front of blue background with a copy space

Mayo Clinic Q&A DEAR MAYO CLINIC: I’ve heard that nonprescription decongestants can have significant side effects. Is this true? ANSWER: While many people rely on nasal decongestants to help ease symptoms of a cold or flu, these medications can sometimes cause more harm than good, especially if taken repeatedly. Examples of commonly used decongestants include […]