What can you do for a blister in your mouth that really hurts?

To alleviate pain from a blister in your mouth, rinse gently with warm salt water several times a day to promote healing and reduce inflammation. Over-the-counter pain relievers, like ibuprofen or acetaminophen, can help manage discomfort. Avoid spicy, acidic, or abrasive foods that may irritate the blister further. If the blister persists or worsens, consult a healthcare professional for further evaluation.