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. 5, n. 2, p. 23–30, 2026. DOI: 10.33974/vxyq3j06. Disponível em: https://rubatosis.org/journals/index.php/ijrpst/article/view/242.. Acesso em: 16 apr. 2026.