Senna Leaf (Cassia angustifolia fol): The Potent Herbal Laxative

Senna, Cassia angustifolia, is the world’s most widely used herbal laxative, and one of the few herbal medicines with both a long traditional history (used in Arabic medicine since the 9th century) and a fully accepted pharmaceutical status, Senna preparations are included in virtually every national pharmacopoeia and are available as licensed pharmaceutical over-the-counter products in the UK. Its mechanism is well understood, its efficacy is established, and its appropriate use is well defined.

At Herba Naturalle, Senna Leaf is listed in the comprehensive herb index as a primary stimulant laxative, used for short-term constipation relief. The Digestive Reset Bundle addresses the underlying causes of chronic constipation that Senna symptomatically relieves.

Active Compounds

Sennosides A and B, the primary anthraquinone glycoside compounds; the sennosides are not absorbed in the upper GI tract; they reach the colon, where bacteria hydrolyse them to active rhein-anthrone
Rhein-anthrone, the active metabolite, directly stimulates peristaltic contractions and increases water and electrolyte secretion into the colon, producing a bowel movement

Clinical Applications

Constipation (Short-Term)

The primary and only recommended application. Senna produces a reliable bowel movement 6–12 hours after ingestion. The most appropriate clinical contexts include:

Acute constipation in adults
Constipation from immobility, medication side effects (opioids), or post-operative
Bowel preparation before colonoscopy

Important Context

Senna treats the symptom of constipation, not the cause. The Digestive Reset Bundle addresses the underlying patterns, smooth muscle dysfunction, gut dysbiosis, insufficient digestive enzyme production, and gut lining dysfunction, that produce chronic constipation.

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How to Use

Standardised tablet/capsule (follow product instructions): The most consistent dosing form
Tea: 0.5–2g dried leaf steeped 10 minutes; take at bedtime for morning effect

Safety

Short-term use only: Maximum 1–2 weeks, prolonged use causes laxative dependence, electrolyte imbalance (particularly hypokalaemia), and melanosis coli (harmless brown discolouration of the colon)
Pregnancy and breastfeeding: Contraindicated
Children under 12: Avoid without medical supervision
IBD, abdominal pain, intestinal obstruction: Contraindicated
Electrolyte monitoring: Required with prolonged use or in high-risk patients

Contact Herba Naturalle for digestive herbal support. Browse all products and the full herb index.

This article is for informational purposes only. Please consult your GP before use.