Studies have shown that the extract from cascara bark also contains a substance called emodin, which may contribute to the laxative effect, due to its excitation of smooth muscle cells in the large intestine.
Studies have shown that the extract from cascara bark also contains a substance called emodin, which may have anti-cancer effects. Emodin is also responsible for some of the laxative effect, due to its excitation of smooth muscle cells in the large intestine.