There are quite a few remedies for the annoying and sometimes painful tongue blisters:
- Aloe Vera: The natural healing properties of this plant will ease the pain and size of a tongue blister. Simply stir one teaspoon of aloe vera gel into one tablespoon of water. Mix well and swish around your mouth three times each day. 
- Yogurt: Plain yogurt with live culture had anti-bacterial properties, one of the main contributors to tongue blisters. Be sure to eat at least one tablespoon three times every day for effectiveness. 
- Salt Water: The salt will reduce the intensity of the sore. Just stir 1/2 teaspoon of salt into 1/4 cup of warm water. Swish around your mouth three times daily until the sore is gone. 
- Hydrogen Peroxide: The antibacterial and disinfectant properties in it will kill the bacteria causing the tongue blisters. Mix the peroxide with equal parts water and use a cotton swab to apply it to the blister. Keep it there for two minutes and then rinse it out with warm water.