PARUL THAPPA1, RUMANI RUKU2, ASHUFTA RASOOL3. Role of Preoperative Oral Melatonin in Reducing Postoperative Analgesic Requirements in Laparoscopic Cholecystectomy Patients: A Randomized Placebo-Controlled Double-Blind Trial. International Journal of Medical Science in Clinical Research & Review, [S. l.], v. 9, n. 05, p. Page: 1331–1338, 2026. DOI: 10.5281/zenodo.22795527. Disponível em: https://ijmscrr.in/index.php/ijmscrr/article/view/1530. Acesso em: 19 oct. 2026.