Mouth ulcer. I use something else?

You should not apply plain glycerin on top of Orasore gel. Orasore already contains glycerin as an active soothing and moisturizing ingredient. Applying more on top is unnecessary and can create an overly sticky barrier, though it is non-toxic if a small amount is swallowed. Avoid giving your son food or drinks for at least 20 to 30 minutes after applying Orasore. This allows the numbing and anti-inflammatory ingredients (lignocaine and choline salicylate) to adhere to the ulcer.

Hello A single mouth ulcer in a 13-year-old is most commonly an aphthous ulcer or may result from accidental cheek biting or minor trauma. Orasore gel can be continued as directed for pain relief. Glycerin is generally not necessary and is unlikely to provide additional benefit. Encourage your child to rinse with warm saline water 3–4 times a day, maintain good oral hygiene, stay well hydrated, and avoid spicy, acidic, or very hot foods until the ulcer heals. Most simple mouth ulcers heal within 7–14 days. If the ulcer persists beyond 2 weeks, becomes very large, recurs frequently, or is associated with fever, difficulty swallowing, or multiple ulcers, please consult a pediatric dentist or oral medicine specialist for a detailed evaluation. Wishing your child a speedy recovery.

You can combine it with warm salt water rinse and  give B complex tablets with probiotic (orasore tablets) or (Nutrolin-B ) tablet once daily for 3-5 days . If the ulcer increases in size or gets more painful and persist for two weeks , consult a doctor for further evaluation.