Salt is sweet for treating tongue blisters because it can cut back inflammation and pain. Salt will even kill microorganism and stop infection.
Mix 1 teaspoon of salt in 1 cup of lukewarm water and stir it well.
Swish the answer around in your mouth for a minimum of thirty seconds and spit it out.
Then, place a pinch of salt directly on the blisters for a moment and rinse your mouth with heat water.
Repeat the method 4 or 5 times daily until the blisters are cured.