Method validation and development of analysis of Drotaverine and Mefenamic acid by RP-HPLC method. International Journal of Research in Pharmaceutical Sciences and Technology, [S. l.], v. 9, n. 1, p. 23–30, 2026. DOI: 10.33974/vxyq3j06. Disponível em: https://rubatosisjournals.com/index.php/ijrpst/article/view/239. Acesso em: 26 jul. 2026.