It is common for viral colds to last a week, but we can target your symptoms more effectively. The syrups you have been taking contain overlapping ingredients, which can cause unnecessary drowsiness without giving targeted relief. To dry up a runny nose and reduce sneezing, you can switch to a daily oral antihistamine like cetirizine or fexofenadine. For nasal congestion, a saline nasal spray is safe and effective. You may also use an oxymetazoline nasal spray for immediate relief, but limit its use to 3 to 5 days to avoid worsening congestion. If your symptoms do not improve in a few days, please consult a doctor.