Levonorgestrel tablets are emergency contraceptives and should be taken orally within 72 hours, the sooner you take them, the better they will be for contraceptive purposes. When taking the oral pill, choose to take it on an empty stomach or 2 hours after a meal, and do not eat any food or water within 2 hours of taking it, as this may reduce the effectiveness of the emergency contraceptive pill. Some women may experience a small amount of withdrawal bleeding about 1 week after taking the pill, which is caused by the drug and usually ends within 3-7 days. Some women will not have withdrawal bleeding, so don’t be overly nervous, it is also a normal phenomenon, not all women must cause withdrawal bleeding. Emergency contraceptive drugs can cause menstrual cycle disorders for 3 months after oral intake, so it is necessary to observe and regulate with medication as much as possible to avoid affecting the health.