Vitamin C tablets generally refers to vitamin C tablets, mouth ulcers eat vitamin C tablets may have a certain effect, but due to the existence of variability in the individual’s physique, caused by a multitude of causes of mouth ulcers, can not be generalized. Vitamin C tablets belong to the vitamin class of drugs, mainly can prevent scurvy, or used in the treatment of various acute and chronic infectious diseases, as well as the adjuvant treatment of purpura and other diseases. The etiology of mouth ulcers is not yet clear, may be genetic, vitamin deficiency, low immunity, trauma and other factors. If patients with mouth ulcers experience a lack of vitamins in the body, taking vitamin C tablets at this time can supplement vitamins, thus helping to promote the recovery of ulcers. However, due to different personal circumstances, some patients simply taking vitamin C tablets can not play a role in the treatment of the disease. It is necessary to cooperate with anti-inflammatory drugs at the same time, follow the doctor’s instructions to use chlorhexidine gargle, or topical lidocaine gel and other pain medication. It should be noted that the use of vitamin C tablets is contraindicated in people who are allergic to its ingredients. Allergic individuals need to take the drug as prescribed by the doctor. The adverse effects of the drug have not been clarified. It is recommended to use it under medical supervision.