Vitamin B is a water-soluble vitamin, which is involved in metabolism in the body, and a reasonable diet will not cause deficiency. Women who are deficient in vitamin B, under the guidance of a doctor, reasonable supplementation of vitamin B will generally not produce side effects, but in the absence of deficiency, or when deficient but excessive supplementation of vitamin B, may cause side effects such as dysfunction of the organism. An overdose of vitamins may cause gastrointestinal tract dysfunction, which may result in symptoms such as loss of appetite, nausea and acid reflux; it may also affect the nervous system, resulting in irritability and headaches, which are generally relieved as the B vitamins are excreted. The yellowing of urine that occurs when vitamin B is excreted is normal and generally not a cause for concern. As B vitamins are water-soluble vitamins, they can be excreted in the urine and generally do not cause vitamin overdose poisoning. However, since the metabolism of B vitamins requires the participation of the liver and kidneys, excessive consumption may increase the burden on the liver and kidneys, especially for women with poor liver and kidney function, who may experience edema due to poor kidney function and should reduce the dose or even stop taking the medication. Supplementation of vitamin B needs to clarify whether the body is deficient, you can go to the hospital for blood tests, if it is a small amount of deficiency, does not need to take drugs, it is best to supplement in daily life through a reasonable diet, increase the amount of coarse grains eaten, such as corn, oats, buckwheat, animal liver, eggs, beans, etc., may also be eaten in moderation, with fresh vegetables and fruits. If food can not correct the vitamin B deficiency, you can take drugs for supplementation under the guidance of a doctor, but avoid self-medication to avoid adverse consequences.