Information plays a key role in helping the recovery of patients of alcohol and drug abuse (ADA). In the rehabilitation centres, ADA patients are engaged in a treatment programme and are expected to integrate back to the society and become productive people. Alongside other medical procedures, information plays an important role in helping in the recovery of patients of alcohol and drug abuse. This study aims to evaluate the access and use of information services to patients of alcohol and drug abuse in Nairobi County, the case of Asumbi Treatment Centre and to suggest ways in which they can be enhanced. The objectives of this study were: to determine the information needs ADA patients in the rehabilitation centre; to establish information seeking habits of ADA patients; to find out how ADA patients use information; to assess the existing information services available to ADA patients; to find out the challenges faced by ADA patients in accessing and using information, and to suggest ways of enhancing provision of information services to ADA patients in rehabilitation centres. This research adopted a case study design and the approach was mixed, having both qualitative and qualitative approaches. The findings revealed that ADA patients have their unique information needs and they experience challenges of accessing and using information. The study identified inadequate facilities for ADA patients to access and use information services in the rehabilitation centre. Among the major recommendations in this study is that ADA rehabilitation centres should establish information centres, and in addition, offer bibliotherapy services to its patients.