The generic name of Yutin is levonorgestrel tablets, and Vitamin C refers to vitamin C tablets. Taken together with vitamin C, it is mainly to prevent women from experiencing nausea, vomiting and other symptoms, if there is no discomfort after taking the pill you can also not take vitamin C. Levonorgestrel tablets are emergency contraceptives, containing a large number of progestins, taken within 72 hours of unprotected sex, can inhibit ovulation, interfering with fertilized egg implantation, and play a contraceptive effect. Progesterone drugs on the gastrointestinal mucosa has a certain degree of irritation, some patients may be nausea, vomiting symptoms after taking, plus vitamin C can relieve these symptoms. Emergency contraceptive pills should be standardized under the guidance of a doctor, not blindly take the drug on their own.