Yutin is also known as the 72-hour emergency contraceptive pill, the price of this contraceptive pill is not expensive, about 20 yuan, you can buy to the regular pharmacy, you can also buy to the hospital, when taking this medicine to eat on an empty stomach, or take this medicine before and after 2 hours do not eat and drink water, to avoid reducing the effectiveness of the drug. If you are having sex, you can take it within 72 hours. If you have sex for more than 72 hours and then take this medicine, it won’t work. This drug cannot be used as a regular contraceptive because of its side effects, which can cause endocrine disorders in women.