Phytoprogestogens, also known as phytoprogestins, are phytochemicals (that is, naturally-occurring, plant-derived chemicals) with progestogenic effects.[1][2]
^ abZava DT, Dollbaum CM, Blen M (1998). "Estrogen and progestin bioactivity of foods, herbs, and spices". Proc. Soc. Exp. Biol. Med. 217 (3): 369–78. PMID9492350.
^Emma Mendonca, May Fern Toh (2013). "Kaempferol Exhibits Progestogenic Effects in Ovariectomized Rats". Journal of Steroids & Hormonal Science. 05 (03). doi:10.4172/2157-7536.1000136. ISSN2157-7536.{{cite journal}}: CS1 maint: unflagged free DOI (link)
^Toh, M.F.; Sohn, J.; Chen, S.N.; Yao, P.; Bolton, J.L.; Burdette, J.E. (2012). "Biological characterization of non-steroidal progestins from botanicals used for women's health". Steroids. 77 (7): 765–773. doi:10.1016/j.steroids.2012.03.013. ISSN0039-128X.