The user asked about advice for a persistent cough with mucus in the throat but no other symptoms. The recommendation given was to try an expectorant syrup to help clear the mucus from the respiratory system. Various brands contain guaifenesin, a common ingredient in expectorants. Natural products like Helixia or Nyzolan may also be effective. GeloMyrtol capsules could provide relief as well. It was also advised to check with a pharmacist before using a syrup with dextromethorphan (DM), as it is typically used for dry coughs. Hydration is important to help thin the mucus and make it easier to clear. If the cough persists despite trying over-the-counter medications or if other symptoms like fever, muscle pain, or difficulty breathing develop, it is recommended to contact the COVID-19 information line.