Toxic and antinutritional factors
The leaves and seeds of Siamese senna contain anthraquinones, alkaloids, phylobatannins, saponins, tannins (though not condensed tannins), oxalates and phytate (Alli Smith, 2009; Jackson et al., 1996; Ingweye et al., 2010). All those sustances are potentially deleterious or toxic to monogastric livestock and to humans, and the foliage or the seeds may require processing before consumption.