Plant Profile

Blackcurrant

Ribes nigrum
Family: Grossulariaceae  ·  Parts used: Fruit, Leaf, Seed, Stem  ·  Also known as: Black currant, Cassis

The complete database record: 3 documented constituents, 5 pharmacological actions, 11 traditional / indicated uses, with 15 cited sources.

Botanical Description

Deciduous shrub (Grossulariaceae), 1-2 m tall, aromatic when the leaves are crushed. Leaves are palmately lobed (3-5 lobes), toothed, with resinous glands on the underside. Small, greenish-white to dull purple, bell-shaped flowers are borne in drooping racemes, followed by clusters of glossy black berries.

Height: 1-2 m
Habit: Deciduous shrub
Leaves: Palmately lobed (3-5 lobes), toothed, resin-glanded beneath, aromatic
Flowers: Small, greenish-white to dull purple, bell-shaped, in drooping racemes
Stem: Woody, multi-stemmed
Root: Fibrous woody root system
Fruit: Clusters of glossy black berries
Flowering Period: April-May

Habitat & Distribution

Native to central and northern Europe and Siberia, growing in damp woodland, fens, riverbanks and hedgerows; widely cultivated commercially as a fruit crop in cool-temperate climates.

Harvesting

Berries are hand- or machine-harvested in mid- to late summer once fully ripe and black. Leaves are gathered in late spring to early summer, before flowering fades, for the medicinal leaf preparation. Seed oil is cold-pressed from the seeds after juicing.

Parts: Fruit, Leaf, Seed
Season: Berries mid-late summer; leaf late spring-early summer

Key Constituents

Anthocyanins (delphinidin, cyanidin glycosides)[1]

Give the berries their deep colour and are the principal antioxidant constituents.

Anthocyanins
Vitamin C and polyphenols[9]

The fruit is exceptionally rich in vitamin C, contributing to its traditional cold/flu use.

Phenolic compounds
Gamma-linolenic acid (GLA, seed oil)[3]

The seed oil is a well-known plant source of the omega-6 fatty acid GLA.

Gamma-linolenic acid (GLA)

Pharmacological Actions

Anti-inflammatory[1, 4, 9, 12, 14]
Antioxidant[9, 10, 12, 14]
Antiviral[12, 14]
Diuretic[12, 14]
Immunomodulator / immune support[9, 12, 14]

Traditional & Indicated Uses

Arthritis / joint pain[12]Moderate · 5/10

inferred from anti-inflammatory action

Mechanistic Exclude Ids: REF-0302, REF-1243, REF-1246
Evidence: 5
Label: Arthritis / joint pain

more plants for arthritis / joint pain →detailed sources →

Cardiovascular / heart health[6, 7, 8, 12]Moderate · 6/10
Evidence: 6
Label: Cardiovascular / heart health

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Cold & flu[12]Moderate · 5/10

inferred from antiviral action

Mechanistic Exclude Ids: REF-0302
Evidence: 5
Label: Cold & flu

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Eye strain / eye health[12]Moderate · 5/10
Evidence: 5
Label: Eye strain / eye health

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Immune support[12]Moderate · 5/10
Mechanistic Exclude Ids: REF-0302
Evidence: 5
Label: Immune support

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Infection (general)[12]Moderate · 5/10

inferred from antiviral action

Mechanistic Exclude Ids: REF-0302
Evidence: 5
Label: Infection (general)

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Inflammation (general)[1, 4, 12]Moderate · 5/10

inferred from anti-inflammatory action

Mechanistic Exclude Ids: REF-0302
Evidence: 5
Label: Inflammation (general)

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Skin irritation[12]Moderate · 5/10

inferred from anti-inflammatory action

Mechanistic Exclude Ids: REF-0302, REF-1243, REF-1246
Evidence: 5
Label: Skin irritation

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Swelling / fluid retention[12]Moderate · 5/10

inferred from diuretic action

Mechanistic Exclude Ids: REF-0302
Evidence: 5
Label: Swelling / fluid retention

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Urinary support[12]Moderate · 5/10

inferred from diuretic action

Mechanistic Exclude Ids: REF-0302
Evidence: 5
Label: Urinary support

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Urinary tract infection (UTI)[12]Moderate · 5/10

inferred from diuretic action

Mechanistic Exclude Ids: REF-0302
Evidence: 5
Label: Urinary tract infection (UTI)

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Traditional Use & History

Blackcurrant has a long northern-European food-medicine tradition: the vitamin-C- and anthocyanin-rich berries have traditionally been used for colds, flu and general vitality, while the leaf has an official EU traditional-use registration for minor joint pain and as a urinary-tract flush, and the seed oil is valued as a source of gamma-linolenic acid (GLA). Modern research confirms broad antioxidant, anti-inflammatory, immunomodulatory and vasoprotective activity across the fruit, leaf and seed oil.[12, 13, 14]

Preparations

Leaf infusion (tea)[12, 13, 14]

Dried leaf steeped in hot water - the traditional joint-comfort/urinary-flush preparation.

Standardised fruit extract[1, 4]

Concentrated anthocyanin extract used in some clinical research.

Dosage

Leaf infusion[12, 13, 14]

EMA-style traditional-use guidance for the leaf suggests roughly 2-4 g dried leaf per cup as an infusion, up to three times daily, for short-term joint or urinary support (not recommended under 18, or with fluid retention linked to heart/kidney disease). Berries and juice are food-safe at normal dietary amounts. Educational reference only, not a prescription.

Safety, Cautions & Contraindications

Safety note[12, 13, 14]Caution

Fruit (berries) • Generally safe as food for most people; adverse effects mainly GI discomfort or allergy in sensitive individuals. • If using high-dose extracts, use extra caution with blood-thinners/anticoagulants (evidence is not definitive, but polyphenol-rich supplements are often treated cautiously in practice). Leaf (folium) • EMA classifies blackcurrant leaf as a traditional herbal medicinal product (not “well-established use”): minor joint pain and urinary-tract flushing. • Typical label cautions (EMA-style): not recommended <18, avoid if you have edema due to impaired heart/kidney function, and seek medical advice if urinary symptoms persist/worsen. • Pregnancy/lactation: food use is fine, but medicinal leaf dosing is generally used cautiously due to limited robust safety data. Seed (seed oil) • Usually well tolerated, but may cause GI upset in some people. • Caution with anticoagulants/antiplatelet drugs (PUFA supplements are often used cautiously here). • Note: some trials explored maternal/infant contexts, but that does not automatically mean “recommended in pregnancy” outside medical supervision.

Safety note[12, 13, 14, 15]Info

Duke (2002) rates blackcurrant fruit highly (+++), with evidence for anti-inflammatory, angioprotective, and antioxidant activities. Ribes nigrum extracts showed the richest anthocyanin and polyphenol content in antioxidant studies, outperforming many other common berries. Clinical use is supported for diarrhea, colds, and flu. The high vitamin C and anthocyanin content underpin its vasoprotective effects. The fruit is treated as food-grade medicine and is classified as generally safe (Duke, 2002).

Harvest Readiness

[11]

Part: fruit
Signals: Pick the berries when ripe and black, in mid-to-late summer.
Basis: traditional
Source Quote: Currants are usually harvested in mid to late summer, from June to August.
Species Confirmed: 1
Notes: PFAF (REF-3323); the berries ripen in mid-to-late summer. Single lineage -> provisional.

[11]

Part: leaf
Signals: Gather the leaves through the growing season, used fresh or dried.
Basis: traditional
Source Quote: The leaves are harvested during the growing season and can be used fresh or dried.
Species Confirmed: 1
Notes: PFAF (REF-3323); the leaves are gathered through the growing season. Single lineage -> provisional.

[11]

Part: seed
Signals: Collect the seeds from the ripe berries in mid-to-late summer (source of blackcurrant seed oil).
Basis: traditional
Source Quote: the seeds ripen from July to August
Species Confirmed: 1
Notes: PFAF (REF-3323); the seeds ripen in the summer berries (July-August). Single lineage -> provisional.

External Identifiers

References & Sources

  1. Lee, Y., Pham, T.X., Bae, M., Hu, S. and others (2019) 'Blackcurrant (Ribes nigrum) Prevents Obesity-Induced Nonalcoholic Steatohepatitis in Mice', Obesity (Silver Spring), 27(1), pp. 112-120. doi:10.1002/oby.22353 Preclinical
    https://doi.org/10.1002/oby.22353
  2. da Costa, P., Schetinger, M.R.C., Baldissarelli, J., Stefanello, N. and others (2024) 'Blackcurrant (Ribes nigrum L.) improves cholinergic signaling and protects against chronic scopolamine-induced memory impairment in mice', Journal of Psychopharmacology, 38(12), pp. 1170-1183. doi:10.1177/02698811241273776 Preclinical
    https://doi.org/10.1177/02698811241273776
  3. Nanashima, N., Horie, K., Yamanouchi, K., Tomisawa, T. and others (2020) 'Blackcurrant (Ribes nigrum) Extract Prevents Dyslipidemia and Hepatic Steatosis in Ovariectomized Rats', Nutrients, 12(5), pp. 1541. doi:10.3390/nu12051541 Preclinical
    https://doi.org/10.3390/nu12051541
  4. Lee, Y. and Lee, J.Y (2019) 'Blackcurrant (Ribes nigrum) Extract Exerts an Anti-Inflammatory Action by Modulating Macrophage Phenotypes', Nutrients, 11(5), pp. 975. doi:10.3390/nu11050975 Preclinical
    https://doi.org/10.3390/nu11050975
  5. Lappi, J., Raninen, K., Vakevainen, K., Karlund, A. and others (2020) 'Blackcurrant (Ribes nigrum) lowers sugar-induced postprandial glycaemia independently and in a product with fermented quinoa: a randomised crossover trial', British Journal of Nutrition, 126(5), pp. 708-717. doi:10.1017/S0007114520004468 Randomized trial
    https://doi.org/10.1017/S0007114520004468
  6. Horie, K., Maeda, H., Nanashima, N. and Oey, I (2021) 'Potential Vasculoprotective Effects of Blackcurrant (Ribes nigrum) Extract in Diabetic KK-Ay Mice', Molecules, 26(21), pp. 6459. doi:10.3390/molecules26216459 Preclinical
    https://doi.org/10.3390/molecules26216459
  7. Nanashima, N., Horie, K., Kitajima, M., Takamagi, S. and others (2021) 'Hypocholesterolemic Effect of Blackcurrant (Ribes nigrum) Extract in Healthy Female Subjects: A Pilot Study', Molecules, 26(13), pp. 4085. doi:10.3390/molecules26134085 Clinical study
    https://doi.org/10.3390/molecules26134085
  8. Horie, K., Nanashima, N., Maeda, H., Tomisawa, T. and others (2021) 'Blackcurrant (Ribes nigrum L.) Extract Exerts Potential Vasculoprotective Effects in Ovariectomized Rats, Including Prevention of Elastin Degradation and Pathological Vascular Remodeling', Nutrients, 13(2), pp. 560. doi:10.3390/nu13020560 Preclinical
    https://doi.org/10.3390/nu13020560
  9. Oczkowski, M (2021) 'Health-promoting effects of bioactive compounds in blackcurrant (Ribes nigrum L.) berries', Roczniki Panstwowego Zakladu Higieny, 72(3), pp. 229-238. doi:10.32394/rpzh.2021.0174 Meta-analysis / review
    https://doi.org/10.32394/rpzh.2021.0174
  10. Vagiri, M., Conner, S., Stewart, D., Andersson, S.C. and others (2015) 'Phenolic compounds in blackcurrant (Ribes nigrum L.) leaves relative to leaf position and harvest date', Food Chemistry, 172, pp. 135-142. doi:10.1016/j.foodchem.2014.09.041 Preclinical
    https://doi.org/10.1016/j.foodchem.2014.09.041
  11. Plants For A Future 'Ribes nigrum (Blackcurrant)'. Available at: https://pfaf.org/user/Plant.aspx?LatinName=Ribes+nigrum Traditional / reference
    https://pfaf.org/user/Plant.aspx?LatinName=Ribes+nigrum
  12. Gopalan, A., Reuben, S.C., Ahmed, S., Darvesh, A.S., Hohmann, J. and Bishayee, A (2012) 'The health benefits of blackcurrants', 3(8), pp. 795--809. doi:10.1039/c2fo30058c Randomized trial
    https://doi.org/10.1039/c2fo30058c
  13. Royal Botanic Gardens, Kew (n.d.). Available at: https://powo.science.kew.org Traditional / reference
    https://powo.science.kew.org
  14. Watson, A.W., Haskell-Ramsay, C.F., Kennedy, D.O., Dodd, F.L., Wightman, E.L. and Reay, J.L (2015) 'Acute supplementation with blackcurrant extracts modulates cognitive functioning and inhibits monoamine oxidase-B in healthy young adults', 54(3), pp. 505--513. Traditional / reference
    https://scholar.google.com/scholar?q=Acute%20supplementation%20with%20blackcurrant%20extracts%20modulates%20cognitive%20functioning%20and%20inhibits%20monoamine%20oxidase-B%20in%20healthy%20young%20adults
  15. Duke, J.A (2002) 'Handbook of Medicinal Herbs, Second Edition'. Traditional / reference
    https://scholar.google.com/scholar?q=Handbook%20of%20Medicinal%20Herbs%2C%20Second%20Edition

This fact sheet is generated automatically from the Omnia Sana plant database and reflects its latest synced data. It is provided for educational purposes only and is not medical advice. How this site is built.

Selected studies & references

Educational use only. This profile summarises traditional and scientific sources for reference. It is not medical advice and not a substitute for a qualified practitioner. Some plants carry safety cautions and drug interactions - always check before use.
This profile is assembled automatically from the Omnia Sana plant database, which we curate by hand. How this site is built.
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