I swear by and use no other cough drop than HALLS.
They really do work. When I start to get a sore throat I take one or 2 of those cough drops and the sore throat is usually gone.
You can also drink warm tea with honey in it.
Hot soups are good to eat when you have a sore throat. Also Ramen Noodles are another good food to eat and easy to swallow with sore throats.
You can also use a vaporizer in your room or the room you're in to help add moisture to the air.
Good luck and hope your sore throat goes away. I hate when I get them.