VALIDATION OF THE PROCEDURE FOR QUANTIFYING DITERPENE LACTONES AND STABILITY STUDY OF ANDROGRAPHIS PANICULATA HARD CAPSULES. TRA VINH UNIVERSITY JOURNAL OF SCIENCE, [S. l.], v. 16, n. 2, 2026. Disponível em: https://journal.tvu.edu.vn/index.php/journal/article/view/163. Acesso em: 27 jun. 2026.