No, you should not put Vaseline on your tongue. Multiple sources advise against using Vaseline or petroleum jelly in the mouth.
Why Avoid Vaseline on Your Tongue?
The oily base of Vaseline can promote infection. This is because it creates a barrier that prevents proper healing and can trap bacteria, hindering the natural cleansing and healing processes of the mouth. While Vaseline might be suitable for moisturizing dry lips in some contexts, its use on the tongue is strongly discouraged due to the increased risk of infection.
Several reputable sources, including the Virginia Cancer Specialists (https://www.virginiacancer.com/treatment-tips/mouth-sores-sore-throat/) and Pediatric Dentistry of Westport (https://www.pediatricdentistryofwestport.com/bitten-lip-or-tongue), specifically recommend against using Vaseline in the mouth. They suggest alternative options like K-Y jelly or Chapstick for lip moisture.
For mouth sores or injuries, it's best to consult a healthcare professional for appropriate treatment. Home remedies like salt water rinses are often recommended for minor mouth injuries (https://www.colgate.com/en-us/oral-health/dental-emergencies-and-sports-safety/traumatic-injuries-of-the-lips-and-tongue).
