Thank you for the information.
At first glance, I would suggest acetaminophen (Tylenol and other brands) for throat pain relief among other things (do not take with Tylenol for colds and sinus)
I also suggest lozenges like Halls or Fisherman's Friend if needed, for local relief of throat irritation.
Most importantly, nasal hygiene with a saline solution (Hydrasense, Sinus Rinse and others) can be done as often as needed during the day, and at least 30 minutes before bedtime. By 'cleaning' the nasal secretions, we can reduce the feeling of pressure in the sinuses and prevent them from flowing backwards into the throat, which very often causes coughing and throat irritation. It's a little unpleasant but it works wonders!
I encourage you to drink lots of fluids, cold or hot, as you prefer.
If symptoms persist for more than 7 days without improvement, you should consult a doctor.
I hope I've been helpful and I'm available if you have any other questions!
Tom Samaha, pharmacist