Manuka honey is said to be a natural elixir for folks with a 'sore throat'. I've never tried this, but plan to the next time I have a throat issue before an upcoming concert or singing event. More info here
. I first heard about this on the You Tube channel of mezzo soprano Katherine Jenkins.
Don't mix it with hot water; Instead, put a teaspoon of the stuff in your mouth and let it 'run down into your throat'.