I believe that many women are not unfamiliar with birth control pills. When conventional contraception fails, many people choose to take oral emergency contraceptives in order to prevent pregnancy, but birth control pills have side effects, especially emergency contraceptives. There are many types of birth control pills, but whether they are long-acting or short-acting, the mechanism of action is to inhibit ovulation and break the normal endocrine pattern of women, so there will be certain side effects during the taking of the pill. The most common side effects include: nausea, vomiting, headache, dizziness, breast pain, abnormal menstruation or spot bleeding, increased and thin leucorrhea, low menstrual flow and even amenorrhea, etc. Oral contraceptives can also reduce the metabolism of sugar and fat, prompting Oral contraceptives can also reduce the metabolism of sugar and fat, increase blood pressure and arteriosclerosis, increase the incidence of thrombotic diseases, and damage the liver function of human body when taken for a long time. If you take oral contraceptives for a long time, any missed dose will affect the effectiveness of contraception. The main role of vitamin C is to improve immunity and resistance, which can regulate human health in many ways. Taking the pill with vitamin C can effectively reduce the side effects of taking the pill, reduce nausea, vomiting, dizziness, headache and other symptoms, and also promote the absorption of the drug. During taking the pill, pay attention to a light diet, eat more fresh fruits and vegetables, avoid cold, spicy and other stimulating foods, it is also necessary to avoid smoking and drinking to avoid adverse effects.