Rhamnus purshiana is a species of buckthorn

Cascara sagrada is an herbal remedy that used to be a common ingredient in some over-the-counter (OTC) laxatives.

The bark comes from a tree called the California buckthorn. This tree grows on the West Coast of the United States and parts of South America. Historically, it was used by Native Americans to treat a host of issues, including:

  • constipation
  • digestive problems
  • joint and muscle pain
  • gonorrhea
  • gallstones
  • dysentery

cascara sagrada

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