Herb Profile
Rheum Palmatum
Rheum palmatum
Rheum palmatum (Turkish Rhubarb) is a root botanical containing emodin and rhein, used traditionally for digestive health.
Last reviewed: •3 sources citedReport a correctionProfile-wide ·C Limited
Use extra caution — Culinary or tea use is usually lower risk, but concentrated oils/extracts can irritate GI or mucosal tissue. Details
- Evidence
- Limited Evidence
- Typical onset
- Varies by prep
- Safety rating
- High caution
- Best for
- Digestive Support, Laxative, Liver Support, Inflammatory signaling
- Avoid / review if
- Pregnancy/Breastfeeding Without Clinician Supervision, Known Allergy To The Plant/Family, Potential Interaction Concern With Immunosuppressants
Safety
Safety & Cautions
Culinary or tea use is usually lower risk, but concentrated oils/extracts can irritate GI or mucosal tissue. Avoid pregnancy dose escalation and use caution with reflux/allergy.
High caution
Caution level: High. Multiple caution categories apply, or the record uses avoid/contraindication language.
- Interaction-AwareMedication or interaction context is explicitly noted.
- Pregnancy/Breastfeeding CautionPregnancy or breastfeeding caution language is present.
Detailed safety fields
Pregnancy, breastfeeding, and contraindications
- Pregnancy/Breastfeeding Without Clinician Supervision
- Known Allergy To The Plant/Family
- Potential Interaction Concern With Immunosuppressants
- Use Clinician Review For High Dose Extracts Or Chronic Use.
Safety classifications
- Interaction-Aware: Medication or interaction context is explicitly noted.
- Pregnancy/Breastfeeding Caution: Pregnancy or breastfeeding caution language is present.
Full safety note
- Culinary or tea use is usually lower risk, but concentrated oils/extracts can irritate GI or mucosal tissue. Avoid pregnancy dose escalation and use caution with reflux/allergy.
Safety labels
- Interaction-Aware
- Pregnancy/Breastfeeding Caution
Evidence
Evidence Summary
Evidence lens
Read as directional context, not settled clinical proof.
LimitedLimited Evidence
Human clinical evidence: Not the primary signal
Mechanistic / preclinical: Mechanism mapped — NF KB Modulation
Research maturity: Theoretical / mechanistic research — Mechanistic or unresolved evidence is kept separate from established human outcomes.
Safety boundary: Safety note available — Culinary or tea use is usually lower risk, but concentrated oils/extracts can irritate GI or mucosal tissue.
This profile cites 3 human studies.
Study design details
Evidence Grade
Grade C: Limited Evidence
Evaluation of methodological rigor, population reach, and evidence alignment.
- Design Match
- Narrative review
- Risk of Bias
- High
- Consistency
- Not assessed
Strongest recorded design is a narrative review, drawn from 3 recorded studies, none of which measured an outcome in people.
How evidence grades work
Each grade reflects the strength and consistency of published human evidence — not marketing claims. Grades are based on study count, design quality, effect size, consistency, and recency.
- Strong
- Multiple RCTs, consistent direction, adequate effect size
- Moderate
- Some RCTs or consistent observational data in humans
- Preliminary / Mixed
- Animal or in-vitro only, or conflicting human data
- Traditional / Theoretical
- Traditional use only; no controlled human trials
Clinical Study Summaries (3)0 human evidence sources · 0 human trials · Participant totals not consistently reported · Consistency not yet classifiable
What the evidence actually shows
This table contains 3 structured sources, including 0 human evidence sources; 0 are human trials.
| Study | Design | N | Dose | Duration | Population | Outcome | Result & magnitude | Source |
|---|---|---|---|---|---|---|---|---|
Emodin: A Review of its Pharmacology, Toxicity and Pharmacokinetics Dong X et al. · Phytother Res · 2016 Background | Narrative review Summarizes selected literature without the full prespecified search and selection methods of a systematic review. | — | — | — | — | — | — | PubMed → |
Aloe-emodin: A review of its pharmacology, toxicity, and pharmacokinetics Dong X et al. · Phytother Res · 2020 Background | Narrative review Summarizes selected literature without the full prespecified search and selection methods of a systematic review. | — | — | — | — | — | — | PubMed → |
PubMed indexed authors · 2006 Background | Narrative review Summarizes selected literature without the full prespecified search and selection methods of a systematic review. | — | — | — | — | — | — | PubMed → |
Dosing & Timing
- No standardized dose
- Preparation specific; use standardized product label for Preparation varies by tradition and product form and require source backed dosage review before therapeutic claims.
How Rheum Palmatum works
Simplified mechanism pathway based on preclinical and pharmacological evidence. Does not confirm clinical efficacy.
Mechanism Pathway — How Rheum Palmatum Works
CompoundTarget / ReceptorMechanismEffect / Outcome
Mechanisms & biological pathways (preclinical)
- NF KB Modulation
Active Compounds
Key constituents studied in Rheum Palmatum, with full pharmacology and safety profiles.
Compare related active botanicals
Explore botanicals with similar chemistry, effects, or safety considerations in the Botanical Activity Atlas.
Compare & Sourcing
Compare side-by-side tradeoffs or verify active marker guidelines.
Safety first · Harm reduction
This information is educational and not medical advice. Start low, avoid risky combinations, and consult a licensed clinician before making health decisions—especially if you use medications, have diagnosed conditions, or are pregnant/breastfeeding.
Learn how we evaluate confidence, safety, and intensity on the methodology page.
Founder & Head Researcher · Oak Ridge, TN · Last reviewed August 2026
Editorial Review
Checked against primary sources, cited evidence, and contraindication language before publication. Evidence claims, safety language, and affiliate modules are reviewed independently. Not personal medical advice.
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