Taking emergency contraceptive pills can be taken together with vitamin C, but it is not necessary. Women may experience nausea, vomiting, abdominal pain and other gastrointestinal discomfort after taking the emergency contraceptive pill, and vitamin C has the ability to protect the mucous membrane of the gastrointestinal tract and reduce the gastrointestinal adverse reactions, taking vitamin C at the same time after taking the emergency contraceptive pill can reduce gastrointestinal discomfort. If there is no gastrointestinal discomfort after taking the emergency contraceptive pill, you do not need to take vitamin C. Vitamin C does not have to be taken together with the emergency contraceptive pill. If the patient needs to take vitamin C, it must be used under the guidance of the doctor, to avoid overdose caused by physical discomfort. Vitamin C and emergency contraceptive pills should be taken under the guidance of a doctor.