B vitamins can be taken in the morning and at night. B vitamins, including vitamin B₁, vitamin B₂, vitamin B₃, vitamin B₅, etc., are nutrients needed by the body.B vitamins can be obtained from food, or supplemented with medication if necessary. And B vitamins supplementation is generally no time limit, morning and evening can be taken, if the drug can check the instructions or follow the doctor’s advice to take. B vitamins are water-soluble vitamins, easy to metabolize, and usually can not be accumulated in the body for a long time, so they need to be supplemented daily. In daily life, bad dietary habits can easily cause B vitamins deficiency, such as like to eat refined refined grains and excessive stewing, frying, deep-frying and other means of cooking food, which may lead to a large number of B vitamins loss. Therefore, B vitamins can be taken in the morning and evening. It is recommended to rationalize the daily diet and balance the nutrition to avoid too much single nutrient intake. If the body has a B vitamin deficiency, such as skin texture deterioration, mouth ulcers, foot fungus and other symptoms can go to the hospital, follow the doctor’s advice to take medication.