I didn’t believe gargling with warm salt water would help but when I tried it, it made a big difference. –Diane
Several studies have found that gargling several times a day with warm salt water can reduce swelling in the throat and loosen mucus, helping to flush out irritants or bacteria.
Doctors generally recommend dissolving half a teaspoon of salt in one cup of water. If the salty taste is too unpleasant for you, try adding a small amount of honey to sweeten the mixture slightly. (Just remember to spit the water out after gargling, rather than swallowing!)
Taken from Health.com