How to get rid of this kanker sore in 2 days? any prescription meds to do that?

Homemade rinse: I noticed a lot of questions about sores in the mouth today. Most of them are caused by viruses and will go away by themselves. Nothing will make them leave faster. But mixing Benadryl (diphenhydramine) with maalox (one to one mix) and swish around the mouth may give you relief from the burn and pain of the sores. Also avoid sour foods. You need to keep hydrated, cold drinks and popsicles also help.