What is Elder?

Elder is a shrub of North America, grown for its dark purple berries and lacy cream flowers. Both are used in home remedies for colds, coughs and fevers. Cooked ripe berries are also an ordinary food, used in syrup, jam and wine.

One point matters before anything else. Raw or unripe berries, and the leaves, stems, bark, roots and seeds, contain cyanide-forming compounds and can make you sick. Cooking the ripe berries drives off most of this risk, which is why nearly every traditional recipe cooks them.

The plant on this page is Sambucus canadensis, the American elder. Its European cousin, Sambucus nigra, is the one used in almost all research. The two are close relatives, but they are not the same plant.

Here is the honest verdict. Human trials of American elder barely exist. Trials of European elderberry for colds and flu are small, few and mixed, so the case is weak rather than settled.

Long use in a tradition is not proof that something works, and it is not proof that it is safe. That applies to elder as much as to anything else, and we do not repeat it in each section below.

How does Elder work?

No one has shown clearly how elder acts in the human body. Most of what is claimed comes from test tubes and cells, not people.

In laboratory tests, elderberry extract appears to block flu virus from entering cells. It also seems to stop the virus binding to the cell surface. Whether this happens at the doses people swallow is not established.

In cell studies, elderberry extracts shift the output of immune signalling chemicals called cytokines. Some animal work points the same way. This has not been tied to fewer or shorter illnesses in people.

The berries are rich in anthocyanins, the pigments that make them dark. These are strong antioxidants in the test tube. Human blood levels after a normal serving are low, and the health meaning of that is unclear.

Elder flower has a traditional reputation for bringing on sweating during a fever. That effect has not been measured in good human studies.

What forms does Elder come in?

Elderberry is sold in many ready-made forms. The flower is sold more narrowly, mostly as a dried tea.

Common forms include:

Berry syrup, the most widely sold form, often sweetened heavily.

Gummies and lozenges, usually with added sugar or vitamin C and zinc.

Capsules and tablets of dried berry extract.

Dried berries for cooking into tea, cordial or jam.

Dried elder flower for tea, and flower tincture in alcohol.

Elderflower cordial and elderberry wine, which are foods and drinks rather than remedies.

Strength varies a lot between brands, and labels rarely state how much anthocyanin you get. Home-made syrup varies even more. Bark and root preparations still appear in old texts, but they are not safe to use.

Where it comes from:

Elder has a long record in American folk medicine and among 19th century Eclectic physicians. It was one of the standard household plants of rural North America.

Eclectic writers listed the flower as a sweat-promoting remedy for fevers and colds. They gave the berry as a syrup or wine for coughs, colds and joint aches.

The inner bark had a harsher role. It was used as a strong purgative and to cause vomiting, in doses that would be considered unsafe today.

Several Native American nations used elder parts for fevers, wounds and digestive complaints, and the plant was later taken up by settlers. Elder flower water was also a cosmetic wash for the skin.

These records tell us what people did, not what worked.

What does Elder help with?

• Common cold symptoms: This is the main modern reason people buy elderberry. Evidence is weak and comes from the European species. A trial in air travellers found slightly shorter and milder colds with elderberry extract. The study was small, and the drop-out pattern makes it hard to read. No good trial has tested American elder for colds. Treat any benefit as unproven, not ruled out.
• Flu symptoms: Folk use for flu is old, and small early trials reported faster recovery. Later work muddied the picture. A 2019 trial in people with confirmed flu found no benefit over placebo. Taking elderberry did not shorten the illness. Elderberry is not a flu treatment. It does not replace vaccination or antiviral medicine from a doctor.
• Fever and chills (traditional use of the flower): Eclectic doctors gave hot elder flower tea to bring on sweating during a fever. The idea was to break the fever through the skin. There are no human trials testing this. Hot fluids of any kind can feel soothing, which may explain much of the reputation. A fever that is high or lasts more than a few days needs a doctor, not a tea.
• Sore throat and cough: Syrups and lozenges are used to coat and soothe the throat. Most sold products also contain honey, sugar or menthol. Thick sweet syrup does soothe a raw throat for a short time. That effect is not specific to elder. No trial shows that elder itself calms a cough better than a plain syrup.
• Sinus congestion: Elder flower appears in old mixtures for blocked sinuses, often with other herbs. A few small European studies tested such mixtures, not elder alone. Because the herbs were combined, you cannot tell what, if anything, elder added. Evidence for elder by itself is absent.
• Constipation (traditional bark use, now considered unsafe): The inner bark was once used as a powerful purgative. It worked by irritating the gut, and it often caused vomiting. This use is listed here for history only. Elder bark is not a safe home laxative, and no dose for it is given on this page.
• Skin washes and salves (traditional use): Elder flower water was applied to irritated skin, sore eyes and minor wounds. Leaf ointments were also made. Human evidence is essentially absent. Leaf preparations carry the plant's toxic compounds and are best left alone.

Which foods are rich in Elder?

Elder is not a nutrient, so no food is rich in it. Cooked elderberry does appear in jam, syrup, pies, cordial and wine, and elder flower in cordial and fritters. These count as foods, and the same cooking rule applies.

What are the side effects of Elder?

• Nausea
• Vomiting, especially after raw or unripe berries
• Stomach cramps and diarrhoea
• Weakness or dizziness after eating raw plant parts
• Allergic reaction, including rash, itching or swelling
• Wheezing in people allergic to elder pollen
• High sugar intake from syrups and gummies

Good to know:

Properly cooked ripe berries and well-made products cause few problems in most adults. Mild stomach upset is the usual complaint.

The serious reactions come from raw or green berries, juice made without cooking, and leaf, stem, bark or root. These have caused sudden vomiting, cramps and weakness in groups of people at once.

Allergy is uncommon but real. Stop taking it and get medical help if your lips, tongue or throat swell, or if breathing becomes hard.

How much Elder should you take?

• Recommended daily: No official dose exists, and nothing here is advice for you personally. These are the amounts labels tend to carry. Berry syrups often state about 10 to 15 ml a day for adults, with smaller child amounts. Capsules of dried berry extract commonly list 300 to 600 mg a day. Dried elder flower tea bags usually hold 1.5 to 3 g. Products differ widely in strength, so the label on the box beats any general figure. No dose is given for elder bark, root, leaf or raw berry, because those parts are not safe to take. If you are on prescription medicine, or buying for a child, ask a pharmacist or doctor first.
• Best time of day: Time of day does not seem to matter. There is no evidence that morning or night works better. People usually spread doses through the day while they feel unwell. Hot elder flower tea is traditionally taken at bedtime, for comfort rather than proven effect.
• With or without food: Food is not required. Taking it with or after a meal may reduce stomach upset. Syrups and gummies carry a lot of sugar. If you watch your blood sugar, count them as sweets and check the label.
• Time to effect: If elder helps at all, people report feeling soothed within hours, mostly from warm sweet fluid. Trials that found any benefit measured it over several days of illness. Many people notice nothing beyond what the cold would have done anyway. It may do nothing. That is a fair outcome to expect.
• How long to take it: Most people use elderberry for a short run during a cold, often a few days to two weeks. Long daily use has not been studied for safety. There is no good data past a few months. If you feel the need to take it every day for months, that is worth raising with your doctor instead.