Take emergency contraceptive pills, before and after two hours can not eat, and can not drink water, should be strictly in accordance with the instructions to take the drug, some of them are a 1-pill pack, take 1 time, but some are 2-pill pack, take 1 tablet first, and then take the other 1 tablet after 24 hours. Emergency contraceptive pills are remedies, it is best to take them as soon as possible within 72 hours, the sooner you take them, the better, it only has a certain remedial effect, there is no regular contraceptive effect. Afterwards, if you still have sex, you must use condoms to strictly do a good job of contraception, otherwise there is still the possibility of unwanted pregnancy. This drug progesterone chances are often large, so you can not take more than 3 times within 1 year, after eating this drug is best to drink more water, try to promote the discharge of drugs.