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Elderberry Side Effects & Safety

Evidence:Moderate
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This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

Safety Profile

Overall safety rating: Generally Safe

Potential Side Effects

  • Very well-tolerated in processed/cooked forms
  • Mild GI upset (nausea, cramping) in some individuals
  • Raw elderberries and unripe fruit contain cyanogenic glycosides — NEVER consume raw elderberry
  • Rare allergic reactions in individuals sensitive to the Adoxaceae/Caprifoliaceae plant family

Drug & Supplement Interactions

  • Immunosuppressants — elderberry stimulates immune function and may counteract immunosuppressive therapy
  • Diabetes medications — elderberry may lower blood sugar; monitor glucose if combining
  • Diuretics — elderberry has mild diuretic properties; may have additive effects

Maximum Dose

Do not exceed: No established upper limit; clinical trials have used up to 1200mg/day without adverse effects

Full Elderberry Guide

References

  1. Meta-analysisHawkins J, Baker C, Cherry L, Dunne E (2019). Black elderberry (Sambucus nigra) supplementation effectively treats upper respiratory symptoms: a meta-analysis of randomized, controlled clinical trials. Complementary Therapies in Medicine. DOI PubMed
  2. RCTTiralongo E, Wee SS, Lea RA (2016). Elderberry supplementation reduces cold duration and symptoms in air-travellers: a randomized, double-blind placebo-controlled clinical trial. Nutrients. DOI PubMed
  3. ReviewWieland LS, Piechotta V, Feinberg T, Ludeman E, et al. (2021). Elderberry for prevention and treatment of viral respiratory illnesses: a systematic review.. BMC complementary medicine and therapies. DOI PubMed
  4. ReviewUlbricht C, Basch E, Cheung L, Goldberg H, et al. (2014). An evidence-based systematic review of elderberry and elderflower (Sambucus nigra) by the Natural Standard Research Collaboration.. Journal of dietary supplements. DOI PubMed
  5. Teets C, Etter AJ, Solverson PM (2025). One-Week Elderberry Juice Intervention Promotes Metabolic Flexibility in the Transcriptome of Overweight Adults During a Meal Challenge.. Nutrients. DOI PubMed
  6. Goh KM, Tan ESS, Lim CSY, Tan PY, et al. (2024). Effect of Dietary Supplementation with Lutein, Zeaxanthin, and Elderberries on Dry Eye Disease (DED) and Immunity: A Randomized Controlled Trial.. Nutrients. DOI PubMed
  7. Coman MM, Micioni Di Bonaventura MV, Cifani C, Silvi S, et al. (2023). SYNBIO® Probiotic and Antioxidant Dietary Supplementation: Clinical Trial Evaluation of Potential Effects on Airline Flight Crew Members' Well-Being.. Microorganisms. DOI PubMed
Show 4 more references
  1. ReviewCrawford C, Brown LL, Costello RB, Deuster PA (2022). Select Dietary Supplement Ingredients for Preserving and Protecting the Immune System in Healthy Individuals: A Systematic Review.. Nutrients. DOI PubMed
  2. Wang JP, Wei CC, Peng YD, Wang HY, et al. (2022). Dose caffeinated energy drink is a consideration issue for endurance performance.. Frontiers in physiology. DOI PubMed
  3. Pietruszewska W, Barańska M, Wielgat J (2018). Place of phytotherapy in the treatment of acute infections of upper respiratory tract and upper gastrointestinal tract.. Otolaryngologia polska = The Polish otolaryngology. DOI PubMed
  4. de Ferrars RM, Cassidy A, Curtis P, Kay CD (2014). Phenolic metabolites of anthocyanins following a dietary intervention study in post-menopausal women.. Molecular nutrition & food research. DOI PubMed