Antioxidant
Blackcurrant Powder (Ribes nigrum)
Also known as: black currant, blackcurrant extract, Ribes nigrum fruit powder, cassis
Blackcurrant fruit powder is rich in anthocyanins and polyphenols with preliminary evidence supporting benefits for vision, inflammatory markers, and antioxidant status. Most human studies are small or use concentrated extracts rather than whole fruit powder.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Primary uses
- Antioxidant support
- Eye health and vision
- Anti-inflammatory effects
- Cardiovascular health
- Endurance performance
How it works
- Anthocyanin and polyphenol antioxidant activity
- Modulation of inflammatory pathways
- Protection against oxidative stress
- Potential microcirculation improvement
Dosage
- Typical range
- 1-3 grams daily of whole fruit powder; concentrated extracts typically 300-500 mg daily
- Timing
- Can be taken any time of day
- With food
- May be taken with or without food; absorption may be enhanced with fat intake for anthocyanins
- Duration
- Consistent daily use recommended for several weeks to assess potential benefits
- Special populations
- Generally well-tolerated; minimal data in pregnancy/lactation
Forms
- Powder· 70/100
- Concentrated extract (in some products)· 70/100
Safety
Common side effects
- Gastrointestinal discomfort (rare at typical doses)
- Mild allergic reactions in sensitive individuals
Contraindications
- Allergy to Ribes species
- Bleeding disorders (theoretical concern; high anthocyanin foods traditionally used; consult healthcare provider)
Evidence notes
Good phytochemical profile with human studies showing promise for vision and inflammation, but evidence is primarily from small RCTs using standardized extracts. Whole fruit powder forms have less robust clinical validation. Grade reflects moderate evidence for specific health claims but limited large-scale RCT data.
Grade C: Mostly observational or small trials; mechanism is plausible but unproven at scale.
Related in Antioxidant
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.