VC tablets generally refers to vitamin C tablets, the role and efficacy of vitamin C tablets is the prevention of scurvy, or adjuvant treatment of purpura, acute and chronic infectious diseases, etc. Allergy to vitamin C is prohibited, in addition, some patients with the drug will have nausea and other adverse reactions. Vitamin C tablets have the efficacy of preventing scurvy, in addition, vitamin C tablets can also be used to assist in the treatment of purpura, acute infectious diseases and chronic infectious diseases. It is recommended to prohibit the use of vitamin C tablets for those who are allergic to vitamin C. If patients take a large amount of vitamin C tablets may have reactions such as nausea, vomiting, headache, frequent urination, diarrhea, red and bright skin and stomach cramps. In addition, long-term use of vitamin C can cause oxalate stones, cysteinate stones, urate stones. In addition, scurvy may occur after long-term use of vitamin C is discontinued. For patients who lack vitamin C in the body, they need to follow the doctor’s instructions to take oral vitamin C tablets for treatment, and should not take medication without authorization.