A person should read the directions on the package and be aware of side effects. Some allergy medications can cause drowsiness, for example, so people should not drive when using them. Anyone who has a persistently stuffy nose or additional symptoms, such as a fever, should seek medical advice. Possibly. https://www.linkedin.com/feed/update/urn:li:share:7356320248985194496/?actorCompanyId=77283885