Vitamin C is vitamin C tablets, mouth ulcers eat vitamin C tablets have a certain auxiliary effect, but there is no therapeutic effect, vitamin C tablets are mainly used in the prevention and treatment of scurvy and so on. The cause of mouth ulcers is not clear, may be due to the lack of vitamins in the body, so the patient to eat vitamin C tablets for the recovery of the condition of the auxiliary effect, but can not be used for the treatment of mouth ulcers. Vitamin C tablets are mainly used for the prevention and treatment of scurvy in the clinic, and can also be used for a variety of acute and chronic infectious diseases and purpura and other auxiliary treatment. It should be noted that some patients may experience nausea, vomiting, stomach cramps and other adverse reactions after taking vitamin C tablets. It is forbidden for those who are allergic to vitamin C tablets to prevent allergic symptoms such as generalized itching and red rash. Vitamin C tablets have a certain effect on mouth ulcers, but patients should not use vitamin C tablets to treat mouth ulcers. Patients should consult a doctor in time and follow the doctor’s instructions.