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Botanical

Flavonols

Flavonols are a subgroup of flavonoids, plant pigments found in onions, kale, apples, tea and berries. Quercetin, kaempferol and myricetin are the best-known examples.

Also listed as Citrus Bioflavonoids, Citrus Bioflavonoid, Bioflavonoids, Bioflavonoid

LongevityImmune SupportGut HealthHair & SkinCognition

What it is studied for

The strongest rated effects first. Bars show the size of the effect, the letter grades the evidence, and each rating lists the studies behind it.

Oxidative stressLongevityStrongA3 studies
InflammationModerateA3 studies
Immune SupportModerateA3 studies
Gut healthModerateBNo linked study
Skin textureHair & SkinModerateBNo linked study
MemoryCognitionSmallBNo linked study
All 7 rated effectsGrouped by health goal, with the publications behind each rating

Flavonols, flavanols or flavonoids?

Flavonols are one subgroup of flavonoids, including quercetin and kaempferol. Cocoa flavanols belong to a different subgroup. The similar names do not make their research interchangeable. 1

Key studies

The most recent publications linked to Flavonols's ratings.

Flavonols in Action: Targeting Oxidative Stress and Neuroinflammation in Major Depressive Disorder2023Anti-Inflammatory Effects of Flavonoids in Common Neurological Disorders Associated with Aging2023The neuroprotective effects of fisetin, a natural flavonoid in neurodegenerative diseases: Focus on the role of oxidative stress2022Flavonoids as Potential Anti-Inflammatory Molecules: A Review2022Anti-inflammatory effects of flavonoids.2019
All 8 studiesEvery publication linked to Flavonols

Why people take it

Immune Support21.6%
Essential Health21.1%
Energy12%
Longevity8.8%
Cardiovascular8.3%
Cognition6.9%

SuppCo community snapshot, 2026-09-28. Reasons for use are not evidence that it works.

Questions people ask

Are flavonols the same as cocoa flavanols?

No. They are different subgroups within the broader flavonoid family. 1

Does the memory study prove prevention?

No. Diet and cognition were observed over time; participants were not assigned a flavonol supplement. 2

Did immune markers improve in the infection review?

Differences in the measured immune markers were trivial despite fewer reported infections overall. 3

Do antioxidant findings prove longer life?

The cited review describes laboratory and animal mechanisms, not evidence of extended human lifespan. 4

Sources

  1. Flavonoids Linus Pauling Institute, Oregon State University