Inulin, as a suppliment feeding beneficial intestinal bacteria

According to this link:
http://www.health-science-spirit.com/overcome-candida.htm

inulin, is "a non-digestible polysaccharide, which helps to feed the beneficial intestinal bacteria, especially in the colon. It is present in Jerusalem artichokes, chicory roots and dandelion roots, and may be sold as a white powder, see http://members.shaw.ca/duncancrow/inulin_prebiotic_probiotic.html. ..."
Here is the link to buy:
http://www26.netrition.com/now_inulin_page.html