Laxative and diuretic
Buckthorn bark contains compounds called anthraquinones, which have a strong purgative, laxative effect on the body.
The compounds in buckthorn bark increase the colon’s ability to spontaneously contract. They also reduce water absorption by the intestines, which means more liquid is left in the colon. This produces larger volume and softer stools, which in turn eases constipation.
Because buckthorn bark is an effective stool softener, it can make bowel movements more comfortable for people with hemorrhoids or anal fissures, or who are recovering from recto-anal surgery. Sometimes, buckthorn bark is also used to cleanse the colon in preparation for gastrointestinal diagnostic procedures.
Its diuretic properties help cleanse the blood and in turn, help with rheumatism, liver and gallbladder problems.