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Elder / elderberry
Elder / elderberry — what the European monograph actually supports, what it is not for, the form and how long it is meant to be used, side effects, and the 2 medicine interactions documented for it.
This is a reference page, not a diagnosis and not a prescription. Herbal products are real pharmacology: they have effects, side effects and interactions with medicines. Tell your doctor and your pharmacist everything you take, including teas and supplements, and never stop or change a prescribed medicine because of anything you read here.
What it is
Sambucus nigra L. — flower and fruit (Sambuci flos, Sambuci fructus)
Local names across the region this site serves: must leeder (ET) · mustaselja (FI) · бузина чёрная (RU).
Grouped here under Colds, cough and throat. Regulatory position: EU herbal monograph — traditional use (flower).
What the evidence supports
The registered indication: Relief of early symptoms of the common cold, for elderflower preparations.
The safety fact comes first here, because it is the one that sends people to hospital. Raw elderberries — and the leaves, bark and unripe fruit — contain cyanogenic glycosides and cause nausea, vomiting and diarrhoea. Cooking the berries destroys them, which is why every traditional recipe boils them into syrup, juice or jam, and why raw foraged elderberry is a recognised cause of gastrointestinal poisoning. A second identification point matters in the Baltic and Nordic countryside: dwarf elder (Sambucus ebulus) is a herbaceous plant with similar-looking black berries and is genuinely toxic. On efficacy, small randomised trials of elderberry syrup in colds and influenza report shorter symptoms, but they are small, several are funded by product makers, and independent summaries describe the evidence as limited. Elderflower, not the berry, is what the EU traditional-use registration covers.
C — Traditional use only Plausible from thirty or more years of use, which is what a traditional-use registration means. No clinical evidence was required and none has settled it.
What it is not for
Influenza in someone at risk — the elderly, pregnant women, people with lung or heart disease — where antiviral treatment and assessment matter, and a syrup does not.
Form, strength and how long
Dried flowers as an infusion, and cooked berry syrups, juices and lozenges. Never raw berries, leaves or bark.
Duration. Short-term symptomatic use over the course of a cold.
No gram figure appears on this page on purpose. The plant part, the extraction solvent and the drug-to-extract ratio together define a preparation, and a number taken from one does not describe another. The reasoning is set out on the hub; the amount that applies to you is the one printed on the pack you are holding, and a pharmacist will read it with you.
Side effects
From cooked, correctly prepared products, few. From raw material, nausea, vomiting, abdominal cramps and diarrhoea. Allergy occurs.
Who should avoid it
Not established in pregnancy or breastfeeding. Children should not be given raw berry preparations at all, and commercial syrups are heavily sweetened.
Interactions with medicines
| Medicine or substance | What is described |
|---|---|
| Immunosuppressants and transplant medicines | Elderberry is marketed as immune-stimulating; the same caution as echinacea applies for people on immunosuppressant therapy, though the evidence behind the claim is weaker in both directions. |
| Diabetes medicines and insulin | Elderberry syrups are largely sugar. Worth counting if you are managing blood glucose. |
The reverse view — start from the medicine rather than the plant — is in the medicine, food and alcohol interactions reference, and summarised for every herb on this site.
As a food
This one is also in the kitchen, so the nutrition figures are worth having next to the pharmacology: see the food data page for calories and nutrients per 100 g and per portion. Culinary amounts and medicinal preparations are different exposures, and the difference is usually the whole safety story.
Sources: European Medicines Agency — Committee on Herbal Medicinal Products (HMPC), European Union herbal monographs · NIH National Center for Complementary and Integrative Health — herb fact sheets · checked 2026-09-06
Frequently asked questions
What is elder / elderberry used for?
Relief of early symptoms of the common cold, for elderflower preparations. The safety fact comes first here, because it is the one that sends people to hospital. Raw elderberries — and the leaves, bark and unripe fruit — contain cyanogenic glycosides and cause nausea, vomiting and diarrhoea. Cooking the berries destroys them, which is why every traditional recipe boils them into syrup, juice or jam, and why raw foraged elderberry is a recognised cause of gastrointestinal poisoning. A second identification point matters in the Baltic and Nordic countryside: dwarf elder (Sambucus ebulus) is a herbaceous plant with similar-looking black berries and is genuinely toxic. On efficacy, small randomised trials of elderberry syrup in colds and influenza report shorter symptoms, but they are small, several are funded by product makers, and independent summaries describe the evidence as limited. Elderflower, not the berry, is what the EU traditional-use registration covers.
Does elder / elderberry work?
Graded C here: Plausible from thirty or more years of use, which is what a traditional-use registration means. No clinical evidence was required and none has settled it. Influenza in someone at risk — the elderly, pregnant women, people with lung or heart disease — where antiviral treatment and assessment matter, and a syrup does not.
How much elder / elderberry should I take?
This reference does not print gram figures, because they do not transfer between preparations of different extract strength. What can be said honestly is the form and the duration: Dried flowers as an infusion, and cooked berry syrups, juices and lozenges. Never raw berries, leaves or bark. Short-term symptomatic use over the course of a cold.
What are the side effects of elder / elderberry?
From cooked, correctly prepared products, few. From raw material, nausea, vomiting, abdominal cramps and diarrhoea. Allergy occurs.
Does elder / elderberry interact with medicines?
Yes — documented for Immunosuppressants, Diabetes medicines. Each one is described on this page, with a link to the medicine-side reference where one exists.
Others in colds, cough and throat
Echinacea
Short-term prevention and treatment of the common cold.
Thyme
As an expectorant in cough associated with a cold.
Sage
As a gargle or mouth rinse for minor inflammations of the mouth and throat; orally for mild dyspepsia and for excessive sweating.
Keep the whole list in one place
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