Abstract: There has been increasing drug and alcohol abuse in Kenya with the associated adverse consequences. As a result, there has been increase in the establishment of treatment and rehabilitation services and demand for the same to assist abusers in recovery and avoid relapse. However, despite the availability and demand of these services, there has also been a simultaneous increase in the relapse cases. This casts doubt on the effectiveness of the existing treatment and rehabilitation services in meeting the ever-increasing number of admitted cases. This study sought to establish the preparedness of alcoholic in coping with the risks that predispose one to relapse assess the effectiveness of treatment and rehabilitation services in addressing alcohol relapse in selected centers in Nairobi, Kenya. This study adopted ex post facto research design. The target population was all the relapse cases in the 14 rehabilitation centers registered by NACADA in Nairobi. A random sample of 109 alcoholics and 8 counselors drawn from 4 purposively selected rehabilitation centers were involved in the study. Data was collected through administration of two sets of self-structured questionnaires to the selected respondents. The questionnaires were piloted to validate and test its reliability before the actual data collection. The data was then processed and analyzed using descriptive statistics including frequencies and percentages with the aid of Statistical Package for Social Sciences (SPSS) version 22.0 for Windows. The results of study have shown that relapse was influenced by the interaction of past-risks within the individual and environmental situations and level of preparedness to cope with these past-risks to resist drinking.