Vitamin C is a water-soluble vitamin found in fresh vegetables and fruits, and a normal diet does not cause deficiency. Vitamin C deficiency due to inadequate eating or increased consumption is recommended to be supplemented with vitamin C preparations. Although vitamin C has an important role to play in the human body, taking too many vitamin C tablets can have adverse effects on the body. Normal vitamin C supplementation for women through diet is simpler, cheaper, safer and more effective. Proper vitamin C supplementation for women can play a certain role in whitening the skin and strengthening the resistance. In addition, vitamin C can also promote collagen protein synthesis, iron and other nutrients absorption, prevention and treatment of various kinds of anemia, repair cell tissues as well as antioxidant. At the same time, vitamin C can also be anti-inflammatory, anti-infection, reduce vascular permeability, promote wound healing, prevent bleeding gums, relieve mouth ulcers. However, if women take vitamin C tablets orally for a long time despite adequate vitamin C intake in their diet, it will result in excessive vitamin C intake, which may lead to abnormal functioning of the gastrointestinal tract, abnormal coagulation, overloading of the kidneys, poor mental state, etc., and in serious cases, it may even induce gastric ulcers and urinary stones and other diseases. Therefore, it is safer to supplement vitamin C through oral medication, preferably under the advice of a doctor.