Switch methods. Use a nasal saline (like a nasal rinse or Neti pot).They can flush out stuffy airways. Cut the cord. Don’t use a spray more than once every 12 hours, or longer than 3 days.
A common brand name that contains guaifenesin is Mucinex. Saline nasal washes, also known as nasal irrigation or nasal lavage, are a natural remedy to clear phlegm from your nasal passages.