Does Vitamin B complex work better than antibiotics or pain relievers for canker sore on gums?

few days ago I felt inflammatory pain at inner upper gums where it meets cheek, by rubbing slightly with finger I found that area swollen and there seemed to be some bumps that caused immense pain when touched. I don't feel like going to the dentist because that pain doesn't seem to come from dental issue but looks more like canker sores...at the time of writing, the symptoms have been around for about a week, I've been relying on pain killers and some antibiotics to ease the uncomfortable feeling but they don't work too well because the pain keeps coming back. Friends suggest me to try vitamin B complex saying that cures canker sores better and faster than any other medicine..So I am here to ask for your opinion before running to the pharmacy to grab some.