What medication should i take for rashes in my tongue?

Rashes: The general term "rashes" is very broad and you would have to be seen by a dentist or physician to go over your medical history and determine the cause of your rashes. The cause would determine how best to treat or handle. The list of possible causes is almost endless and there is not one medication that fits all situations or would even necessarily be effective.

Depends on cause: Best option would be to see physician or dentist to determine what is causing the symptoms. Different causes such as a fungal, bacterial, or viral infection all require different treatments.