Preparing for Pregnancy Vitamin B2 can be taken, but do not overdose. Vitamin B2, also known as riboflavin, is a class of water-soluble vitamins. Participate in the body’s oxidation and energy metabolism, participate in the body’s iron metabolism, with the protection of the skin follicle mucosa and sebaceous glands function. When the body lacks vitamin B2, it can cause keratitis, stomatitis, epiglottitis, iron deficiency anemia and other diseases. If the body experiences symptoms due to vitamin B2 deficiency, it should go to the local hospital for professional treatment. It should be noted that too much vitamin B2 is not good for the body, and may even accumulate and cause poisoning. Vitamin B2 can be taken in moderation during preparation for pregnancy, but care should be taken not to overdose.