Levonorgestrel enteric-coated tablets are used for emergency contraception in women, when an effective method of contraception is not being used or other contraceptive methods have failed. It should not be taken orally for more than 72 hours, and the earlier it is taken, the more effective it is. Delayed menstruation after taking the pill should be checked promptly with blood HCG or urine pregnancy test paper. Oral emergency contraceptive pills have a higher success rate and greater side effects. Irregular vaginal bleeding is likely to occur after oral use, and frequent oral use will lead to irregular menstruation. Emergency contraceptive pills should not be taken orally twice a month, not more than 3 times in a year, and try to use condoms. Long-term contraception is recommended to choose the intrauterine device or short-acting contraceptive pill. Drink plenty of warm water to promote metabolism. Eat more fresh vegetables, fruits and other foods rich in vitamins.