Related Compounds
Compounds connected by the same goals, effects, or research topics.
Herb Profile
Psyllium
Plantago ovata
Psyllium is the soluble fiber from the husks of Plantago ovata seeds, best known as a bulk forming laxative.
Last reviewed: •3 sources citedReport a correctionProfile-wide ·C Limited
Use extra caution — Must be taken with plenty of water; choking or bowel obstruction risk in dysphagia/strictures. Details
- Evidence
- Limited Evidence
- Typical onset
- Varies by prep
- Safety rating
- High caution
- Best for
- Digestive, Cardiovascular, Metabolic health
- Avoid / review if
- Pregnancy/Breastfeeding Without Clinician Supervision, Known Allergy To The Plant/Family, Potential Interaction Concern With Antidiabetic Medicines
At a glance
From this profile's structured data- Evidence
- Grade C
- Safety
- Must be taken with plenty of water; choking or bowel obstruction risk in dysphagia/strictures.
- Profile context
- digestive, cardiovascular
Next stepsWhere to go next — guides & comparisons
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Safety
Safety & Cautions
Must be taken with plenty of water; choking or bowel obstruction risk in dysphagia/strictures. Separate from oral medications by 2 4 hours.
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 Antidiabetic Medicines
- 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
- Must be taken with plenty of water; choking or bowel obstruction risk in dysphagia/strictures. Separate from oral medications by 2 4 hours.
Safety labels
- Interaction-Aware
- Pregnancy/Breastfeeding Caution
Evidence-based safety
Caution when combined
Severity and certainty are shown separately. A high-priority caution can still be theoretical: these pairings are screened from shared contraindication mechanisms and are not automatically documented clinical interactions. Provenance identifies the source fields that produced each flag; it does not upgrade the certainty of the pairwise claim.
Moderate Caution
110 flagged pairingsBlood-sugar lowering
Moderate Caution
110 flagged pairingsBlood-sugar lowering
Representative pairings are shown below. Large mechanism groups are intentionally summarized to keep profiles focused and crawl-efficient.
Blood-sugar loweringCertainty: Theoretical
Data provenance recorded for 110 of 110 pairings in this mechanism group.
- Acarbose — Theoretical interaction certainty
- ajoene — Theoretical interaction certainty
- Allicin — Theoretical interaction certainty
- Aloe Vera — Theoretical interaction certainty
- Alpha-Lipoic Acid — Theoretical interaction certainty
- American Ginseng Extract — Theoretical interaction certainty
- Andrographis — Theoretical interaction certainty
- Anemarrhena Asphodeloides — Theoretical interaction certainty
- Tarragon — Theoretical interaction certainty
- Ashoka — Theoretical interaction certainty
- Astragalus — Theoretical interaction certainty
- Astragalus Membranaceus — Theoretical interaction certainty
+98 more pairings share this mechanism. Use the Safety Checker to review a specific combination.
Evidence
Evidence Summary
Evidence lens
Read as directional context, not settled clinical proof.
LimitedLimited Evidence
Human clinical evidence: Present in source signals
Mechanistic / preclinical: Mechanism mapped — Metabolic Regulation · Vascular Function Support · Glucose Metabolism Support
Research maturity: Emerging research — Long Term Human Evidence May Be Limited.
Safety boundary: Safety note available — Must be taken with plenty of water; choking or bowel obstruction risk in dysphagia/strictures.
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
- Meta-analysis
- Risk of Bias
- Low
- Consistency
- Consistent
Strongest recorded design is a meta-analysis, drawn from 4 recorded studies, 3 in people. No disagreement is recorded across them.
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 (4)3 human evidence sources · 1 human trial · ~242 participants across 1 human evidence source with reported N · Consistency not yet classifiable
Filter by study class
Showing 4 of 4 studies.
What the evidence actually shows
This table contains 4 structured sources, including 3 human evidence sources; 1 is a human trial. Across 1 human evidence source with a reported sample size, the approximate participant total is 242; overlapping publications may include some of the same people.
| Study | Design | N | Dose | Duration | Population | Outcome | Result & magnitude | Source |
|---|---|---|---|---|---|---|---|---|
Schoeneck M et al. · Nutr Metab Cardiovasc Dis · 2021 Background | Meta-analysis Statistically combines results from multiple eligible studies; confidence still depends on the quality, consistency, and directness of those studies. | — | — | — | — | — | — | PubMed → |
Background | Meta-analysis Statistically combines results from multiple eligible studies; confidence still depends on the quality, consistency, and directness of those studies. | — | — | — | — | — | Psyllium significantly reduced LDL and total cholesterol, while triglycerides and HDL did not significantly change. | PubMed → |
Lai H et al. · Gut Microbes · 2023 Background | Randomized controlled trial Randomly assigns participants to interventions or controls, reducing many sources of bias when the trial is conducted well. | n=242 | — | — | — | — | — | PubMed → |
Fiber and prebiotics: mechanisms and health benefits Slavin J et al. · Nutrients · 2013 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 Seed/fiber preparations are commonly used as whole seed and require source backed dosage review before therapeutic claims.
How Psyllium works
Simplified mechanism pathway based on preclinical and pharmacological evidence. Does not confirm clinical efficacy.
Mechanism Pathway — How Psyllium Works
CompoundTarget / ReceptorMechanismEffect / Outcome
Mechanisms & biological pathways (preclinical)
- Metabolic Regulation
- Vascular Function Support
- Glucose Metabolism Support
- Lipid Metabolism Support
Compare related active botanicals
Explore botanicals with similar chemistry, effects, or safety considerations in the Botanical Activity Atlas.
Guides that use Psyllium
Goal guides
Condition guides
Compare & Sourcing
Compare side-by-side tradeoffs or verify active marker guidelines.
Review available sources for Psyllium
Independent database mapping — evaluated separately from safety and efficacy scores.
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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.
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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