Baking soda changes the pH of the throat, making it more alkaline, which can help kill off bad bacteria. Most people have a box of baking soda in their cupboard, so this is a great option for treating a sore throat. You will need:
Heat the water so that it is warm but not boiling. Then, add the salt and baking soda. Gargle and spit out the mixture. Repeat this process about three times a day.

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