Vitamin C effervescent tablets are used to strengthen the body’s resistance, prevent and treat infectious diseases and so on. The main ingredient of vitamin C effervescent tablets is vitamin C, which is a vitamin drug. Vitamin C can enhance the body’s resistance, so as to prevent and assist in the treatment of various types of acute and chronic infectious diseases, or scurvy, etc. It is used in the recovery period after illness, trauma healing period and the auxiliary treatment of allergic diseases, iron deficiency anemia. However, patients taking drugs need to be under the guidance of a doctor, do not take medication without authorization, so as not to damage their health. In particular, pregnant women, gout, oxalate deposition, diabetes, allergy and other groups of people need to be cautious or contraindicated to take the drug. Some patients may develop urate, cysteinate or oxalate stones, or diarrhea, headache, frequent urination, nausea, vomiting and other discomforts during the long-term use of vitamin C effervescent tablets in large quantities. If patients experience abnormal discomfort during treatment with vitamin C effervescent tablets, they should go to a regular hospital in time. After clarifying the cause of the disease, take relevant treatment measures. Do not use vitamin C effervescent tablets on your own.