Gargling salt water is a known treatment for sore throats. According to the University of Connecticut, gargling with warm salt water can help soothe a sore throat and break down secretions. It’s also known to help kill bacteria in the throat.
A salt water solution consisting of 1/2 teaspoon of salt in a glass of warm water can help reduce swelling and keep the throat clean. This should be done every three hours or so.