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Herb Profile
Astragalus
Astragalus carries a Grade C rating — limited evidence.
Last reviewed: •3 sources citedReport a correctionProfile-wide ·C Limited
Use extra caution — Immune active potential; use caution with autoimmune disease, transplant medicines, immunosuppressants, and during active cancer treatment unless clinician supervised. Details
- Evidence
- Limited Evidence
- Typical onset
- Varies by prep
- Safety rating
- Moderate caution
- Best for
- Immune Support, Adaptogen, Energy, Stress
- Avoid / review if
- Transplant/Immunosuppression Without Clinician Guidance, Autoimmune Flare Risk, Pregnancy Without Guidance
At a glance
From this profile's structured data- Evidence
- Grade C
- Safety
- Immune-active potential; use caution with autoimmune disease, transplant medicines, immunosuppressants, and during active cancer treatment unless clinician-supervised.
- Profile context
- immune_support, adaptogen, energy
Next stepsWhere to go next — guides & comparisons
Continue reading
- If you want help with anxiety or stress → Anxiety & stress guides
- If you want to browse more herbs → All herbs
Safety
Safety & Cautions
Immune active potential; use caution with autoimmune disease, transplant medicines, immunosuppressants, and during active cancer treatment unless clinician supervised.
Elevated caution
Caution level: Elevated. One caution category applies — read it before use.
- Hormonal Activity ContextHormone-adjacent wording is present and should be interpreted carefully.
Detailed safety fields
Pregnancy, breastfeeding, and contraindications
- Transplant/Immunosuppression Without Clinician Guidance
- Autoimmune Flare Risk
- Pregnancy Without Guidance
- May Counter Immunosuppressants
- May Interact With Lithium
- Diuretics
- Antidiabetics
- And Antivirals Depending Context.
Safety classifications
- Hormonal Activity Context: Hormone-adjacent wording is present and should be interpreted carefully.
Full safety note
- Immune active potential; use caution with autoimmune disease, transplant medicines, immunosuppressants, and during active cancer treatment unless clinician supervised.
Safety labels
- Hormonal Activity Context
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 Membranaceus — Theoretical interaction certainty
- Bael — 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: Not the primary signal
Mechanistic / preclinical: Mechanism mapped — Inflammatory Signaling Modulation · Immune Signaling Modulation · Hormonal Signaling Context
Research maturity: Theoretical / mechanistic research — Mechanistic or unresolved evidence is kept separate from established human outcomes.
Safety boundary: Safety note available — Immune active potential; use caution with autoimmune disease, transplant medicines, immunosuppressants, and during active cancer treatment unless clinician supervised.
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 |
|---|---|---|---|---|---|---|---|---|
Astragalus polysaccharide: a review of its immunomodulatory effect Li CX et al. · Arch Pharm Res · 2022 Background | Narrative review Summarizes selected literature without the full prespecified search and selection methods of a systematic review. | — | — | — | — | — | — | PubMed → |
Plant Extracts as Skin Care and Therapeutic Agents Michalak M et al. · Int J Mol Sci · 2023 Background | Narrative review Summarizes selected literature without the full prespecified search and selection methods of a systematic review. | — | — | — | — | — | — | PubMed → |
Auyeung KK et al. · Am J Chin Med · 2016 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 Root slices/decoction and require source backed dosage review before therapeutic claims.
How Astragalus works
Simplified mechanism pathway based on preclinical and pharmacological evidence. Does not confirm clinical efficacy.
Mechanism Pathway — How Astragalus Works
CompoundTarget / ReceptorMechanismEffect / Outcome
Mechanisms & biological pathways (preclinical)
- Inflammatory Signaling Modulation
- Immune Signaling Modulation
- Hormonal Signaling Context
- Stress Response Modulation
Active Compounds
Key constituents studied in Astragalus, with full pharmacology and safety profiles.
Compare related active botanicals
Explore botanicals with similar chemistry, effects, or safety considerations in the Botanical Activity Atlas.
Guides that use Astragalus
Compare & Sourcing
Compare side-by-side tradeoffs or verify active marker guidelines.
Sourcing options
Astragalus product picks
Recommendation status
Product recommendations are not shown for this profile because the current site safety and monetization policy does not permit them.
Product form & quality guidelines
When sourcing Astragalus, verify the label for:
- Standardized extract: Confirm active content percentages on the supplement facts panel (e.g. standardized to specific marker compounds) rather than simple raw herb weights.
- Third-party testing: Look for independent purity labels (USP, NSF, ConsumerLab, or Eurofins) to ensure the product is free from heavy metals, solvents, and contaminants.
- Form bioavailability: Ensure the form matches evidence-supported configurations (e.g. standardized active extracts like bacosides, withanolides, or curcuminoids) for optimal onset and digestion tolerance.
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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