If you see Cascara (Rhamnus purshiana) listed as an ingredient in a diet supplement, put it back on the shelf. Cascara is a natural laxative, and for some reason diet supplement makers think we won’t notice where the lost weight ended up. No one every burned any fat by sitting on the john.
Warning: Prolonged use or overdose may cause diarrhea, electrolyte imbalance and hepatitis. The FDA rules that cascara is not safe as a stimulant laxative.