When you want some caffeine and a way to relieve your sore throat at the same time, try 4 bags of peppermint tea with 4 bags of green tea steeped in 12 cups of hot water. It's very good and it relieves the throat instantly.
Lemon ginger water also works better than plain water to relieve a sore throat (the juice of a lemon and 1/2 inch piece of fresh ginger root (squeezed through a garlic press a few times) in a 2 quart pitcher of water. More palatable than some of the other remedies I've seen here. Plus, it works!!