Quick Reference
- Scientific Rating
-
3.5/ 5.0
- Primary Mechanism
- Irritation of the colonic mucosa by anthraquinone derivatives to induce peristalsis
- Standardized Form
- Dried bark extract or powder
Cascara sagrada (Rhamnus purshiana) bark contains anthraquinones that stimulate bowel movements. While historically very popular in over-the-counter laxatives, the FDA eventually ruled it non-GRAS (Generally Recognized as Safe) for OTC drugs due to a lack of modern safety data, though it remains widely available as a dietary supplement.
Table of Contents
Clinical Summary
Effective for short-term constipation relief, but growing safety concerns regarding long-term use and potential liver toxicity have limited its modern clinical endorsement.
Dosage Guidelines
Doses vary by preparation; historically used short-term. Not recommended for more than 7 consecutive days.
Safety & Side Effects
Safety & Side Effects
Short-term adverse effects include severe abdominal cramps, diarrhea, and electrolyte imbalance (particularly hypokalemia or potassium depletion).
Chronic use poses severe health risks, including potential hepatotoxicity (liver damage), laxative dependency (loss of normal bowel function), and Melanosis Coli (a pathological condition causing apoptosis and dark pigmentation of the colon wall).
Regulatory Warning: Due to a lack of safety data and concerns over long-term toxicity, the U.S. FDA reclassified cascara sagrada, removing it from the list of generally recognized as safe and effective (GRASE) over-the-counter stimulant laxatives.
Known Interactions
Interacts with cardiac glycosides (like digoxin), diuretics, and corticosteroids due to the risk of potassium loss.
Scientific References
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Medical Disclaimer
The information provided in this clinical review is for educational and informational purposes only. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment.
*These statements have not been evaluated by the Food and Drug Administration (FDA). This product or ingredient is not intended to diagnose, treat, cure, or prevent any disease.
Always consult your physician or other qualified health provider with any questions you may have regarding a medical condition, or before beginning any new diet, fitness, supplement, or treatment regimen, especially if you have pre-existing medical conditions or are taking prescribed medications.
