After taking the emergency contraceptive pill, you should generally fast for two hours, and you should not eat any food, including water, within two hours to avoid affecting the contraceptive effect of the emergency contraceptive pill. Emergency contraceptives can be eaten two hours after taking the pill, including drinking more water to speed up the metabolism of the pill so as not to cause adverse reactions to the pill to occur. Emergency contraceptive pills may cause intestinal dysfunction, which may cause nausea, vomiting and even diarrhea after oral intake, so it is recommended that it can be observed. Emergency contraceptive pills are hormonal and may cause confusion in the menstrual cycle or even early or late menstruation after oral administration. Because each person has a different body type, the performance may be different. It is recommended to observe, not everyone will have adverse reactions.