quitosana
https://www.sciencedirect.com/science/article/pii/S0271531798000918

psyllium
https://journals.lww.com/jcge/Abstract/2010/09001/The_Right_Fiber_for_the_Right_Disease__An_Update.15.aspx

picolinato de cromo
https://europepmc.org/article/med/9480618