Hi, Thanks for posting in HCM. I understand your concern for your friend. The symptoms what you have been describing appears that your friend has lower respiratory tract infection. Kindly do the following to overcome them. 1. Do salt water gargling with warm water thrice a day. 2. Use steam inhalation to liquefy the mucous for easy drainage. 3. Take mucolytic-decongestant medications in the form of syrup containing Ambroxyl/Bromhexine, Guaifenesin and Chlorpheniramine maleate as ingredients. 4. Take a course of antibiotic like Azhithromycin. 5. Take medicated lozenges for throat soothening effect when necessary. He need to strictly avoid consumption of cold items like cold drinks and ice cream. His symptoms should getter soon by adopting to above measures. Hope the information provided would be helpful. All the best.