Theresa Thorne from kwa’mutsun shares some information on cascara

q’ey’xulhp
cascara

nilh ni’ hakwushuhw kw’un’s ’i shq’uw’iil’s.
You use it when you do a cleanse (when you are constipated). 

’uy’ slhexun’.
It’s good medicine.

ni’ ch ’uw’ thuythut  ’i’ kw’un’s ni’ wulh hith kw’un’s q’aq’i’, ni’ ch q’a’t ’u tthu slhexun’.
You get better when you have been sick for long time, and you mix it with other medicine. 

nilh ’uy’ kw’un’s ’aluxut ’i’ yuse’lu sil’anum kw’un’s sule’stuhw ’i’ yelh ’un’s hakwush. 
It’s good when you pick it that you put away for two years before it is usable.