Elderberry
A best-selling immune remedy. Small older trials suggested shorter colds and flu, but the largest recent trial found no effect — evidence is genuinely mixed.
What the science says
- Shortening colds and flu Limited evidence
A meta-analysis of small randomized trials found elderberry substantially reduced upper respiratory symptom duration. However, the largest and most rigorous trial to date (in influenza patients) found no benefit versus placebo, so the question remains open.
Dosage & safety
Studied doseStudies used standardized extracts or syrups (e.g. 15 ml syrup 4x/day during illness); commercial products vary widely in actual elderberry content.
SafetyCommercial extracts are safe short-term. Raw or unripe berries, leaves, and bark are toxic (cyanogenic glycosides) — never consume homemade preparations that aren't properly cooked.
Scientific references
- Black elderberry (Sambucus nigra) supplementation effectively treats upper respiratory symptoms: a meta-analysis of randomized, controlled clinical trials
- Elderberry extract outpatient influenza treatment for emergency room patients ages 5 and above: a randomized, double-blind, placebo-controlled trial
Where to buy
Nature's Way, Sambucus®, Immune Gummy, Elderberry, 60 Gummies
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Related in Immunity
- Vitamin C Limited evidence
- Zinc Moderate evidence
- L-Lysine Limited evidence
- Echinacea Limited evidence
- Andrographis Moderate evidence
- Astragalus Limited evidence