Hello, Read your concern. If your sore throat and Nasalcongestion have not improved after five days of intake of Cheston cold, you may have to change the treatment plan. Adding an antibiotic like Amoxycillin-clavulanic acid ,625 mg twice daily would suffice and helpful for sore throat to combat infection. Steam inhalation with menthol can be tried additionally for nasal congestion Getting an X-Ray of the paranasal SInus will help to rule out any Nasal Deviation. Try to remember if your nasal congestion is associated with any other symptoms like joint pain or eye inflammation to rule out any systemic disease. Paracetamol 500 mg can be taken if there s accompanying Fever. Best of luck Any follow up questions are welcome. Get well soon.