Sahakitpichan, P.; Chimnoi, N.; Thamniyom, W.; Ruchirawat, S.; Kanchanapoom, T. Aromatic Rutinosides from the Aerial Roots of Pandannus tectoriu. Phytochem. Lett. 2020, 37, 47-50.

Efficacy of Andrographis paniculata extract treatment in mild to moderate COVID-19 patients being treated with favipiravir: A double-blind, randomized, placebo-controlled study (APFaVi trial) Siripongboonsitti T, Ungtrakul T, Tawinprai K, Auewarakul C, Chartisathian W, Jansala T, Julsawad R, Soonklang K, Mahanonda N, Mahidol C Phytomedicine. 2023;119:155018.