DEVELOPMENT AND CHARACTERIZATION OF SILDENAFIL CITRATE ORAL THIN FILMS. International Journal of Pharmaceutical Sciences and Drug Research, [S. l.], v. 13, n. 2, p. 147–151, 2021. DOI: 10.25004/IJPSDR.2021.130205. Disponível em: https://ijpsdronline.com/index.php/journal/article/view/1928.. Acesso em: 17 oct. 2025.