Vitamin B is not recommended for long-term use if not required by the condition. Vitamin B family has more than a dozen kinds, with the promotion of digestion, nutrition, nerve, promote growth and metabolism, improve anemia and other effects. However, long-term use of vitamin B will appear side effects, such as irritability, fatigue, loss of appetite, skin allergies appear flushing, itching, etc. If there are gastrointestinal diseases such as gastric ulcers and other gastrointestinal diseases, liver and kidney insufficiency of the population, should not be taken for a long time Vitamin B, because it will aggravate the ulcers and increase the burden of metabolism of the liver and kidneys. The human body needs very little vitamin B, but vitamin B is water-soluble, every day will be completely metabolized, so the human body needs to be supplemented every day with the right amount of vitamin B. And vitamin B is rich in beans, dairy, animal liver, green vegetables and other foods, so every day to achieve a balanced diet is not lacking in vitamin B. If there is a vitamin B deficiency caused by foot odor and other diseases, it is recommended to go to the hospital to consult the doctor, according to the doctor’s instructions to take. Do not blindly use your own medicine.