I have an ulcer in my mouth that did not go away after antibiotics. What is it?

Hello,

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I have just gone through your complaint. It could be due to some vitamin deficiency since you have already taken Metronidazole, which has not helped you. So, it may not be a bacterial infection. I would suggest you use a mouthwash containing Chlorhexidine gluconate, undiluted. Swish it inside your mouth for 30 seconds and spit. Use it twice a day after meals. Do not eat or drink anything after that for half an hour. I would also suggest you take Vitamin B complex with Zinc, for example, Becosules Z, for 10 days after breakfast. You also need to use an oral gel containing Lidocaine and Chlorhexidine gluconate. Apply it on the affected area two to three times a day. Continue taking Mefenamic acid for pain. Since you developed this problem just a week back, it is something acute. Do not worry. Take warm and soft food for a week. I would like to know whether you smoke or not. I hope it helps you. If the problem persists, you can write to us or visit a dentist specializing in oral medicine and radiology.