[1] Hongxun Tao, Xu Wu. Et al. Rhodiola species: A comprehensive review of traditional use, phytochemistry, pharmacology, toxicity, and clinical study. Med Res Rev. 2019 Sep;39(5):1779-1850. doi: 10.1002/med.21564
[2] K Flora, M Hahn, H Rosen, K Benner, Milk thistle (Silybum marianum) for the therapy of liver disease. PMID: 9468229. DOI: 10.1111/j.1572-0241.1998.00139.
[3] Chumpon Wilasrusmee, Smita Kittur, Gaurang Shah, Josephine Siddiqui, David Bruch, Skuntala Wilasrusmee, Dilip S Kittur. Immunostimulatory effect of Silybum Marianum (milk thistle) extract. Med Sci Monit 2002 Nov;8(11):BR439-43. PMID: 12444368