Golden Shower Tree

BotanicalBest in the evening

What is it

Golden shower tree (Cassia fistula) is a tropical tree whose fruit pulp (Bahava magaj, Aragvadha) has been used in Ayurveda primarily as a mild laxative.

Evidence for 1 use

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Occasional constipation

Limited Evidence

Anthraquinone-containing herbal laxatives reliably produce bowel movements. Specific evidence for Cassia fistula in controlled trials is sparse but consistent with the broader class.

How it works

The fruit pulp contains anthraquinone glycosides similar to those in senna and aloe. These compounds are not absorbed in the small intestine; in the colon, bacteria release the active anthraquinones, which stimulate the colonic muscle and reduce water absorption, producing a laxative effect. The pulp also contains polyphenols and some sugars. Other traditional indications include skin and liver complaints, but human evidence is limited to small uncontrolled studies.

Dosage

Traditional preparations use the fruit pulp in gram doses (often 5-10 g). Standardized extract products vary, and no modern consensus dose has been established. Like other stimulant laxatives, the lowest effective dose should be used.

When and how to take it

If used for occasional constipation, take in the evening; effects typically appear 6-12 hours later. Not intended for daily long-term use.

1 commercial form

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Fruit pulp (Bahava magaj)

Used in Ayurveda for short-term relief of constipation.

Traditional preparation containing anthraquinones.

Safety

Stimulant laxative use can cause abdominal cramping, diarrhea, electrolyte loss (especially potassium), and dependence with prolonged use. Long-term use is discouraged. Acute overuse can lead to dehydration and electrolyte imbalance.

Who should be cautious

Avoid during pregnancy and breastfeeding. Not for use in children except under medical supervision. Avoid in inflammatory bowel disease, intestinal obstruction, undiagnosed abdominal pain, or chronic kidney disease.

Interactions

Stimulant laxatives can lower potassium, increasing the risk of digoxin toxicity and potentiating diuretic-induced potassium loss. They may also alter absorption of medications taken at the same time.

Frequently asked questions

Is golden shower tree safe for daily use?⌄

No. Like other stimulant laxatives, regular long-term use can lead to dependence, electrolyte loss, and worsening constipation when stopped.

How long until it works?⌄

Effects typically appear 6-12 hours after intake. Evening dosing usually produces a morning bowel movement.

References

Golden Shower Tree on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Golden Shower Tree (PubMed search) — PubMed link

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Evidence-based·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.