Only making use of Levonorgestrel as a post intercourse anti-conceptive method has proven to be more effective than prior methods and is the object under study in this report. This post intercourse anti-conceptive consists of a set of methods which, employed after at risk sexual intercourse and within a maximum period of time, avoid pregnancy. This post intercourse anti-conceptive is not considered to be an abortion method but it should not be used as a habitual anti-conceptive method due to its adverse effects and its numerous interactions with other pharmaceutical products. Its use shall be limited to emergency situations. Special emphasis must be given as part of health education to females who employ this technique. As health professionals, we need to know this topic in depth so that we can best advise those persons in need of information. The authors propose to provide general information about aspects related to this pharmaceutical product.