Why do i get these painful sores on my tongue? what can i do about them?

Vitamin B complex: I have had success treating inflamed papilla of the tongue with daily dose of vitamin b complex. If you are prone to it, stay on the vitamin b complex daily to help reduce frequency. B complex not just a single b vitamin. Its water souluable so an excess washes out of your system and not likely to cause a problem.

See a dentist: There are many different sores that can occur on your tongue. Without more information it is hard to give you a direct answer. It may be as simple as a canker sore, or it could be cancer. See a dentist when the sores are present and he or she will be able to give you the best recommendation.

Cause?: Very little information given and lots of possibilities. The cause will determine the treatment. You'll need to see a dentist when the sores are present in order to get the diagnosis right. Without a medical and dental history and an actual clinical exam, we could only give you a list of possibilities which will be of no benefit to you.