Gystinat Les 3 Chenes acts on urinary discomfort. Cystinat has changed its denomination for Gystinat. Urinary discomfort is the concern of many women and men. These annoyances can harm daily, so act at the first sign of pimples during urination. Gystinat is formulated from 6 plant extracts: cranberry, mauve, thyme, blueberry, heather, marshmallow. the action of cranberries, also called cranberry, on microbial germs has been evaluated by numerous clinical studies, thyme contributes to cystic protection thanks to its microbial properties. heather is recognized for its draining action which promotes renal and urinary elimination of water.