口服避孕药是我国育龄妇女常用的一种避孕措施。口服避孕药的主要成分是雌激素及孕激素,具有抑制排卵的作用,有效率达95%以上。但口服避孕药对机体的物质代谢和营养吸收会产生一些影响,主要是改变维生素的代谢。曾有资料报道,连续服用避孕药几个月,而没有注意补充维生素,可使体内维生素水平大大降低,尤其是维生素B_1、维生素B_2、叶酸、维生素A等。有鉴于此,妇科专家建议口服避孕药的妇女时常补充维生素,除 Oral contraceptives are commonly used contraception in women of childbearing age in our country. Oral contraceptives are the main component of estrogen and progesterone, with the role of inhibition of ovulation, the effective rate of 95% or more. However, oral contraceptives on the body’s metabolism and nutrient absorption will have some impact, mainly to change the metabolism of vitamins. There have been data reports, taking a few months of continuous contraceptives without paying attention to vitamin supplements, vitamin levels can greatly reduce the body, especially vitamin B_1, vitamin B_2, folic acid, vitamin A and so on. In view of this, gynecologists suggest that women who take oral contraceptives often have vitamins, in addition to