Vitamin B tablets are vitamin B complex tablets and vitamin C is vitamin C tablets. Vitamin B complex tablets are mainly used for the prevention and treatment of malnutrition and other diseases caused by B vitamin deficiency, and vitamin C tablets to prevent scurvy and other diseases. Vitamin B complex tablets are used for the prevention and treatment of malnutrition, anorexia, beriberi and pellagra caused by B vitamin deficiency. Vitamin C tablets are mainly used for the prevention of scurvy, but also can be used for a variety of acute and chronic infectious diseases and purpura and other auxiliary treatment. Some patients may experience adverse reactions such as irritability, fatigue and loss of appetite after taking vitamin B complex tablets. Adverse reactions such as diarrhea, red and bright skin, and headache may occur when taking vitamin C tablets. Long-term use of 2 to 3 grams per day may cause scurvy after stopping the drug, so it is advisable to gradually reduce the amount of stopping the drug. Long-term use of 2 to 3 grams per day may cause post-discontinuation scurvy, so it is advisable to gradually reduce the amount of discontinuation of the drug. Excessive application of vitamin C chewable tablets can lead to enamel damage. In addition, patients who are allergic to compound vitamin B tablets and vitamin C tablets should not take them to prevent allergic symptoms such as generalized rash, generalized itching of the skin, and respiratory difficulties. Vitamin B complex tablets and vitamin C tablets work differently, but should not be taken for a long time. It is recommended that patients consult a doctor before taking medication to avoid unauthorized use of medication.