Pain under tongue a burn from liquid cold sore medicine. what can i do and will it heal soon?

Will heal soon.: Mouth and inside is rich in blood supply and nerve sly. Though the burn may be very painful , if it is not a deep ulcer will heal fast. But if doesn't heal within a week to a reasonable level see your doctor to r/o any secondary infection of the burn wound. Taking a multivitamin may enhance healing fast for a wk-10 days course.Make sure to avoid meds. Getting into mouth and eyes when applied to fac.

Yep!: Usually within 2-3 days. If not, see your dentist!