It is best to take the emergency contraceptive pill on an empty stomach, and not to eat or drink within 2 hours after taking the pill to avoid reducing the efficacy of the drug. If you do not take the pill on an empty stomach, you can take it 2 hours after eating. It is good for the absorption of the emergency contraceptive pill and can be more effective if you eat and drink after 2 hours after taking this pill. Because the success rate of the emergency contraceptive pill is only 85-90%, the earlier you take it, the better the effect, so there are still a few people who become pregnant. If, after taking this pill, you do not have a normal period when you come to your period, you must go to the hospital in time for a checkup to avoid an unplanned pregnancy.