_____________________________________________________________________________________________________ ++ Assistant Professor, Consultant Psychiatrist; # Medical Intern; *Corresponding author: E-mail: abdulr.harbii@gmail.com; J. Pharm. Res. Int., vol. 35, no. 30, pp. 14-22, 2023 Journal of Pharmaceutical Research International Volume 35, Issue 30, Page 14-22, 2023; Article no.JPRI.108951 ISSN: 2456-9119 (Past name: British Journal of Pharmaceutical Research, Past ISSN: 2231-2919, NLM ID: 101631759) Prevalence of Obsessive-Compulsive Disorder among Medical Students at Taibah University, Saudi Arabia Nadir Mohamed Makki a++ , Abdulrahman Mohammad Alharbi b#* , Ammar Mousa Aljohani b# , Saleh Saud Aljohani b# , Hassan Kamel Jan b# and Ayman Shabab Almukhlifi b# a Department of Psychiatry, Taibah University, Saudi Arabia. b Taibah University, Saudi Arabia. Authors’ contributions This work was carried out in collaboration among all authors. Author NMM contributed to the conception and designed the study, performed the statistical analysis, guarantor of the manuscript. Author Abdulrahman Mohammad Alharbi managed the literature searches. Author ASA performed the clinical studies. Author Ammar Mousa Aljohani did the data analysis. Author HKJ prepared the manuscript. Author SSA edited the manuscript. All authors read and approved the final manuscript. Article Information DOI: 10.9734/JPRI/2023/v35i307457 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/108951 Received: 11/09/2023 Accepted: 16/11/2023 Published: 20/11/2023 ABSTRACT Background: Obsessive-compulsive disorder (OCD) is a prevalent mental disorder. It has an onset during the late teens, thus putting university students at higher risk as a target group. They live in an environment that is full of stressors and factors that may lead to the expression of Original Research Article