_____________________________________________________________________________________________________ *Corresponding author: E-mail: adedeji.oyenuga@lasu.edu.ng; Asian J. Educ. Soc. Stud., vol. 43, no. 3, pp. 62-73, 2023 Asian Journal of Education and Social Studies Volume 43, Issue 3, Page 62-73, 2023; Article no.AJESS.98297 ISSN: 2581-6268 A Study of the Prevalence of Substance Consumption Among In-School and Out-of-School Youths in ETI OSA Local Government Area of the Lagos Metropolis Adedeji Oyenuga a* and Olamide M. Farinde a a Department of Sociology, Faculty of Social Sciences, Lagos State University, Nigeria. Authors’ contributions This work was carried out in collaboration between both authors. Both authors read and approved the final manuscript. Article Information DOI: 10.9734/AJESS/2023/v43i3944 Open Peer Review History: This journal follows the Advanced Open Peer Review policy. Identity of the Reviewers, Editor(s) and additional Reviewers, peer review comments, different versions of the manuscript, comments of the editors, etc are available here: https://www.sdiarticle5.com/review-history/98297 Received: 08/02/2023 Accepted: 11/04/2023 Published: 08/05/2023 ABSTRACT This study quantifies the prevalence of substance use among youth in the Eti-Osa Local Government Area of the Lagos Metropolitan Region. This research examines both in and out-of- school youths in a cross-sectional manner. Using a multistage sampling method, four hundred respondents were chosen as the sample population from the Eti-Osa LGA population. Data were gathered using a quantitative, then analysed using SPSS. The study indicated that the group under observation had a high knowledge of problematic substance use (93.5%). That substance use was common and most prevalent in male youth. Indian Hemp and Tramadol were the two most complex substances most frequently consumed. Nonetheless, codeine was more frequently ingested by the individuals under study. These drugs are pretty widely available and reasonably priced. Friends (they inspired 88% of users), followed by social media (41%), movies and entertainment (48%), Original Research Article