Educational information, not medical advice — ask your doctor or midwife.
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Cloudberry is a small amber berry from a low bog plant, Rubus chamaemorus. It grows wild across northern Norway, Sweden, Finland, Russia and northern Canada. In Nordic homes it is eaten as jam, dessert sauce and cordial.
It is a food first, not a medicine. The berry is rich in vitamin C and holds plant compounds called ellagitannins. Its own benzoic acid helps it keep for months without much sugar.
Here is the honest verdict. As a food, cloudberry is a good source of vitamin C, and vitamin C prevents and treats scurvy. Beyond that, claims about treating disease have not been tested well in people.
Long use in a tradition is not proof that something works. It is also not proof that something is safe. Both of those apply here, and the rest of this page is written with that in mind.
Only one part of the story is settled: the vitamin C. Vitamin C is needed to build collagen, the protein that holds skin, gums and blood vessels together. A diet short of it causes scurvy, and vitamin C from food or supplements treats that.
The rest is proposed, not proven. Cloudberry holds ellagitannins, which your gut bacteria turn into smaller compounds called urolithins. That conversion does happen in people, but what it does for health is still unclear.
In test tubes, cloudberry extracts mop up reactive molecules and slow the growth of some bacteria. Lab results like these do not tell you what happens in a person who eats jam.
Some lab and animal work suggests berry polyphenols may calm inflammation signals. This has not been shown for cloudberry on its own in human trials.
Cloudberry seed oil is pressed from the pips and used on skin. It carries fats and vitamin E that help hold water in the outer skin layer. Small cosmetic studies support basic moisturising, which is what any good plant oil does.
Most people meet cloudberry as food, and that is the form with the longest safety record.
Common forms:
Fresh or frozen berries, sold mainly in Nordic countries.
Jam and dessert sauce, often served with cheese or waffles.
Juice, cordial and syrup.
Freeze-dried powder, sold as a smoothie or baking ingredient.
Capsules and extracts, sold as food supplements.
Seed oil, used in face creams, balms and serums.
Liqueur, such as Finnish lakkalikööri. This is an alcoholic drink, not a health product.
Dried leaves are sometimes sold for tea. There is very little modern research on the leaf, so treat it as the least studied form.
Cloudberry was prized across the Nordic north long before anyone measured vitamin C. Sámi and coastal communities gathered it in late summer from open bogs. It was sometimes called Arctic gold, because a good patch was worth guarding.
Berries were packed in water or in their own juice and kept in cool cellars. They lasted the winter without sugar. Sailors and northern households carried them on long journeys, and crews were said to stay free of scurvy on them.
Folk use also included the leaves, brewed as a tea for upset stomachs and urinary complaints. That use was never tested and is not supported today.
The berry still carries strong cultural weight. It appears on the Finnish two-euro coin and in national desserts across the region.
Call emergency services if your lips, tongue or throat swell, or you struggle to breathe after eating it. That is a severe allergic reaction.
Stop and see a doctor if you get hives, a spreading rash or repeated vomiting after eating cloudberry.
See a doctor rather than self-treating if you have bleeding gums, easy bruising or slow-healing wounds. These can signal low vitamin C or something else entirely, and both need checking.
See a doctor if burning urine, fever or back pain last more than a day or two. A urine infection needs proper treatment.
Cloudberry is an ordinary food in the EU, the UK, Norway and the United States. It needs no special approval to sell as fruit, jam or juice.
Supplements and powders are sold as food supplements, not medicines. They may not legally claim to treat disease.
Picking is covered by right-to-roam rules in Finland and Sweden. In parts of northern Norway, picking cloudberries on private land is restricted by law.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
Reviewed by the HealisticMD editorial team How we grade evidence →
The published evidence for Cloudberry is weak or absent. That usually means no controlled trial has tested it, not that a trial found it ineffective — the two are different, and we grade only what has been published.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
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