Taking birth control pills followed by oral vitamins will not cause an effect, because if you take birth control pills, such as short-acting birth control pills due to the combination of estrogen and progesterone, it is likely to cause changes in the skin, skin roughness, elasticity loss, and the appearance of the lack of luster, pigmentation, oral vitamin C can improve the situation, because the vitamin C has the effect of whitening and can make the skin glowing, so taking the The birth control pill and then take vitamins, will not have an impact on the effectiveness of contraception. It is recommended to use intrauterine device (IUD) for contraception because it has relatively few side effects and the contraceptive effect is good and simple. If you miss a dose of oral contraceptive pills, you are likely to have irregular vaginal bleeding or get pregnant again, so it is recommended that you use the IUD as a method of contraception.