✓ No active regulatory warningsFDA MedWatch, EMA EudraVigilance, WHO VigiBase, WADA Prohibited List · 2026-05-29
⚠ Raw elderberry consumption — cyanogenic glycoside toxicity [1]
⚠ Start at FIRST symptom onset for best results (like echinacea) [3]
⚠ Transplant patient — immunostimulation risk [2]
⚠ Cytokine storm concern with COVID was theoretical, not clinical [1]
ℹ️ Not obtained from food. Not applicable — this is not obtained from food in meaningful amounts; supplementation is the practical route.
🔬 Lab interpreter
ℹ️ No validated blood test. There is no established laboratory test to assess status or guide dosing for this ingredient. Clinical response and symptoms are the practical guide.
⚕ For professionals — confirm ranges against your local laboratory.
Clinical verdict
Elderberry reduces URI duration by ~2 days in meta-analysis — start at symptom onset. Raw elderberry is TOXIC (cyanogenic glycosides — must be cooked). Sambucol is the most studied brand. No evidence for COVID. Cytokine storm concern was theoretical and unconfirmed. One of the better-evidenced immune supplements for acute URIs [1] [2] [3].
1 How much do I need?
👤 Adults: Specific dosage data under clinical review
👴 Elderly: Specific dosage data under clinical review
🤰 Pregnancy: See guidance
Processed products likely safe. No specific studies. No raw elderberry [1].
👦 Pediatric: See guidance
Elderberry syrup is popular for children's cold symptoms. Use commercially prepared products only. No raw elderberry for children [1].
🏃 Athletes: Standard dose
⚖️ Obesity: Standard dose
Fat-soluble compounds may require dose adjustment in obesity.
🩺 Renal: Consult specialist
Dose adjustment may be needed in renal impairment.
🌱 Vegan: Standard dose
How to take
🍽 Timing: At FIRST symptom onset. Multiple doses per day for 5–7 days [3].
💊 With food: Can be taken with or without food [1].
2 Which form?
| Form | Bioavailability | Vegan | Cost |
|---|---|---|---|
| ['Standardized elderberry extract', 'preferred', 'Standardized to anthocyanin content. Sambucol is the most studied brand [3].'] | Standard | Check label | |
| ['Elderberry syrup', 'common', 'Traditional preparation. Cooked. Sweet. Popular for children [1].'] | Standard | Check label | |
| ['Elderberry gummies', '', 'Popular OTC form. Check for actual elderberry content vs sugar [1].'] | Standard | Check label | |
| ['Raw elderberry', '', 'TOXIC — contains sambunigrin (cyanogenic glycoside). Must be cooked before consumption [1].'] | Standard | Check label |
3 Common questions
Does elderberry work for colds and flu? ▼
Meta-analysis of 4 RCTs: yes, elderberry reduces URI duration by ~2 days and severity, particularly when started at symptom onset [3]. The evidence is modest (small trials) but consistent.
Is elderberry safe during COVID? ▼
There was a theoretical concern that elderberry could trigger a 'cytokine storm' in COVID-19 — this was based on in vitro cytokine data and has NOT been confirmed clinically [1]. There are no published clinical trials of elderberry for COVID.
Can raw elderberries make you sick? ▼
Yes — raw elderberries, leaves, bark, and seeds contain sambunigrin, a cyanogenic glycoside that releases hydrogen cyanide. Symptoms include nausea, vomiting, diarrhea, and in severe cases, cyanide toxicity [1]. Always use cooked or commercially processed products.
Sambucol — is it better than other brands? ▼
Sambucol is the most studied brand in published clinical trials [3]. Other standardized extracts with verified anthocyanin content should work similarly, but Sambucol has the most direct clinical evidence.
4 Clinical evidence
Strong
Antiviral activity against influenza A and B in vitro: neuraminidase inhibition and hemagglutinin blocking [2]. Raw elderberry toxicity (cyanogenic glycosides) — processing/cooking eliminates risk [1]. HIGH
Moderate
URI treatment: meta-analysis of 4 RCTs (n=180) showed reduced duration (by ~2 days) and severity of upper respiratory infections with elderberry supplementation [3]. Influenza treatment: Zakay-Rones trial showed 4-day faster recovery vs placebo [3]. Traveler's illness: one trial showed reduced cold duration and severity during air travel [3]. MODERATE
Insufficient
5 Safety, toxicity & adverse events
Absolute contraindications
✕ Raw/uncooked elderberry — contains cyanogenic glycosides (sambunigrin) that release hydrogen cyanide; must be heat-treated
Relative
⚠ Autoimmune diseases — immunostimulatory effect may worsen flares
⚠ Concurrent immunosuppressants (transplant, autoimmune therapy) — may counteract immunosuppression
⚠ Theoretical concern in severe COVID/influenza with cytokine storm — immune stimulation could worsen outcomes (unproven)
🚩 Red flags
● Patient consumed raw elderberries with GI symptoms — cyanogenic glycoside toxicity [1]
● Patient on immunosuppressants using elderberry — immune stimulation [2]
6 Interactions
Drug interactions
Immunosuppressants Major
Mechanism: Elderberry stimulates cytokine release and NK cell activation. [2]
Effect: May oppose immunosuppression. [2]
Action: Avoid in transplant patients [2].
Supplement synergies
Zinc · 75 mg/day zinc lozenges during cold
Both support immune function during acute infections [1].
Both support immune function during acute infections [1].
Vitamin C · 1,000 mg/day
Complementary immune support. Popular cold combination [1].
Complementary immune support. Popular cold combination [1].
Echinacea · 300–500 mg TID echinacea
Different immune mechanisms. Commonly combined for acute URIs [1].
Different immune mechanisms. Commonly combined for acute URIs [1].
7 Regulatory
United States (FDA): Dietary supplement. No drug claims [1].
European Union: Traditional herbal medicine registration in some countries [1].
Germany (Commission E): Not a Commission E-approved herb (insufficient data at time of review) [1].
South Korea: Available as dietary supplement.
8 US supplement products
24
on-market products containing Elderberry (NIH DSLD)
Brands carrying Elderberry (20)
Click a brand to see its Elderberry products.
9 Frequently paired with
10 References (3)
[1]National Institutes of Health, NCCIH. Elderberry. Updated 2024. www.nccih.nih.gov REVIEW Accessed: 2026-05-29
[2]Zakay-Rones Z, et al. Inhibition of several strains of influenza virus in vitro and reduction of symptoms by an elderberry extract (Sambucus nigra L.) during an outbreak of influenza B Panama. J Altern Complement Med. 1995;1(4):361-369. doi:10.1089/acm.1995.1.361 REVIEW Accessed: 2026-05-29
[3]Hawkins J, et al. Black elderberry (Sambucus nigra) supplementation effectively treats upper respiratory symptoms: a meta-analysis of randomized, controlled clinical trials. Complement Ther Med. 2019;42:361-365. doi:10.1016/j.ctim.2018.12.004 META-ANALYSIS Accessed: 2026-05-29
11 Related articles
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12 Cite this page
Vancouver: Pkhakadze G. Elderberry — safety profile [Internet]. Tbilisi: PHIG; 2026 [cited 2026 Jun 01]. Available from: https://supplement.ge/ingredients/elderberry/
APA 7th: Pkhakadze, G. (2026). Elderberry — Safety profile. Public Health Institute of Georgia. https://supplement.ge/ingredients/elderberry/
📋 Editorial information
Author: Prof. G. Pkhakadze, MD, MPH, PhD
Institution: Public Health Institute of Georgia (PHIG)
Affiliation: David Tvildiani Medical University (DTMU)
First published: January 2026
Last reviewed: 2026-05-29
Next review: December 2026
References: 3 cited sources
COI: SupplementIndex receives no funding from supplement manufacturers. All content independently authored by PHIG.
Process: Systematic literature review
📄 License & reuse
Published under Creative Commons Attribution 4.0 International (CC BY 4.0). You may share and adapt for any purpose with attribution.
Pkhakadze G. "Elderberry — Safety Profile." SupplementIndex, PHIG, 2026. https://supplement.ge/ingredients/elderberry/ CC BY 4.0.
GP
Educational and public health purposes. CC BY 4.0. Consult your healthcare provider before starting any supplement. Corrections: info@accreditation.ge. Publisher: PHIG