Anthocyanidins
Evidence status
Limited evidence to recommend for any consumer outcome yet.
38 papers · 0 claims · 90 outcomes scored
Evidence summary
Evidence summary
Anthocyanidins provide modest blood vessel and glycemic support, while vision benefits are less consistent and the overall effect remains small.
- Across 38 papers and 90 outcomes, anthocyanidins most consistently improved vascular markers.2
- Most trials tested anthocyanin-rich berry extracts rather than isolated anthocyanidins.
- Safety reports include diarrhea, headache, dark stools, and rare colitis flares in susceptible guts.
Outcomes
What anthocyanidins actually does, by outcome
Each row is one outcome with effect size, evidence base, the dose that worked in trials, and time to first effect. Magnitude tiers come from native-unit MCID where available, Cohen's d otherwise.
Risk profile
Adverse events and known drug interactions
Safety events
Co-studied with
Supplements that share evidence with anthocyanidins
Frequently asked
Common questions
Are anthocyanidins and anthocyanins the same thing?
How long do anthocyanidins take to work?
Can you take anthocyanidins every day?
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Sources
- 1. Anthocyanins, oxidative stress, and inflammation in human trials
- 2. Anthocyanins and vascular or cardiovascular outcomes, randomized trials and meta-analysis
- 3. Anthocyanins and glycemic control, randomized trials and meta-analysis
- 4. Anthocyanins and eye or vision outcomes, berry extract trials
- 5. Anthocyanins safety, gastrointestinal adverse events, and case reports
Generated May 15, 2026