Herb Profile
Elderberry
Sambucus nigra
Elderberry refers to the dark berries of Sambucus nigra, rich in anthocyanin pigments and long taken as a syrup or extract during colds and influenza.
Last reviewed: •3 sources citedReport a correctionProfile-wide ·C Limited
Use extra caution — Use cooked/standardized berry preparations; raw/unripe parts can contain cyanogenic glycosides; caution in autoimmune/immunosuppressed contexts. Details
- Evidence
- Limited Evidence
- Typical onset
- Varies by prep
- Safety rating
- Moderate caution
- Best for
- Antiviral, Respiratory, Stress resilience, Inflammatory signaling
- Avoid / review if
- Autoimmune/Transplant Immunosuppression Without Clinician Review, Pregnancy/Breastfeeding Without Guidance, May Counter Immunosuppressants
Safety
Safety & Cautions
Use cooked/standardized berry preparations; raw/unripe parts can contain cyanogenic glycosides; caution in autoimmune/immunosuppressed contexts.
Elevated caution
Caution level: Elevated. One caution category applies — read it before use.
- Pregnancy/Breastfeeding CautionPregnancy or breastfeeding caution language is present.
Detailed safety fields
Pregnancy, breastfeeding, and contraindications
- Autoimmune/Transplant Immunosuppression Without Clinician Review
- Pregnancy/Breastfeeding Without Guidance
- May Counter Immunosuppressants
- Caution With Diuretics Or Antidiabetics Depending Product.
Safety classifications
- Pregnancy/Breastfeeding Caution: Pregnancy or breastfeeding caution language is present.
Full safety note
- Use cooked/standardized berry preparations; raw/unripe parts can contain cyanogenic glycosides; caution in autoimmune/immunosuppressed contexts.
Safety labels
- 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 — Inflammatory Signaling Modulation · Oxidative Stress Modulation · Immune Signaling Modulation
Research maturity: Emerging research — Long Term Human Evidence May Be Limited.
Safety boundary: Safety note available — Use cooked/standardized berry preparations; raw/unripe parts can contain cyanogenic glycosides; caution in autoimmune/immunosuppressed contexts.
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
- Not assessed
Strongest recorded design is a meta-analysis, drawn from 3 recorded studies, 2 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)2 human evidence sources · 0 human trials · ~180 participants across 1 human evidence source with reported N · Consistency not yet classifiable
Filter by study class
Showing 3 of 3 studies.
What the evidence actually shows
This table contains 3 structured sources, including 2 human evidence sources; 0 are human trials. Across 1 human evidence source with a reported sample size, the approximate participant total is 180; overlapping publications may include some of the same people.
| Study | Design | N | Dose | Duration | Population | Outcome | Result & magnitude | Source |
|---|---|---|---|---|---|---|---|---|
PubMed · Complement Ther Med · 2019 Background | Meta-analysis Statistically combines results from multiple eligible studies; confidence still depends on the quality, consistency, and directness of those studies. | n=180 | — | — | — | — | — | PubMed → |
Elderberry for prevention and treatment of viral respiratory illnesses: a systematic review Wieland LS et al. · BMC Complement Med Ther · 2021 Background | Systematic review Uses a predefined method to find and evaluate relevant studies, but may or may not pool their results statistically. | — | — | — | — | — | — | PubMed → |
Elderberry (Sambucus nigra L.): Bioactive Compounds, Health Functions, and Applications Liu D et al. · J Agric Food Chem · 2022 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 Cooked syrup and require source backed dosage review before therapeutic claims.
How Elderberry works
Simplified mechanism pathway based on preclinical and pharmacological evidence. Does not confirm clinical efficacy.
Mechanism Pathway — How Elderberry Works
CompoundTarget / ReceptorMechanismEffect / Outcome
Mechanisms & biological pathways (preclinical)
- Inflammatory Signaling Modulation
- Oxidative Stress Modulation
- Immune Signaling Modulation
- Oxidative Stress
Active Compounds
Key constituents studied in Elderberry, 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.
Sourcing options
Elderberry product picks
Affiliate recommendations for Elderberry. Review safety, dose, and product quality before buying.
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Product form & quality guidelines
When sourcing Elderberry, 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.
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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