Villacorta, Josué R., David A. Servellón, Isabel L. Bazzocchi, and David Torres-Romero. “Evidence of Sildenafil Citrate in Aphrodisiac Herbal Formulations Marketed in San Salvador El Salvador, by HPLC-DAD and NMR 1H Methodology”. Revista Minerva 3, no. 2 (November 3, 2022): 34–45. Accessed December 6, 2025. https://www.camjol.info/index.php/revminerva/article/view/12557.