Allergic to vaseline lip balm how to stop swelling?

Unlikely. You may have reacted to another ingredient in the lip balm, not vaseline or you may have reacted to something you ingested, either food or medicine. Write down what you had over the past hour, take a Benadryl (diphenhydramine) and head to the er. Worried this may extend further to your tongue.

Related Questions

Will lip balm like vaseline cause health damage with daily use as I no doubt swallow some of it everyday?

No. The man who invented vaseline swallowed a tablespoon full of it every day for most of his life. Just to prove that it is safe. He lived into his 90's. Read more...