In addition to cannabinoids and terpenes, cannabis contains flavonoids – plant pigments with possible antioxidant and anti-inflammatory properties.
Discussion of cannabis compounds usually focuses on cannabinoids and terpenes. A third class of compounds is often forgotten: flavonoids. These plant pigments are found in almost all fruits, vegetables and herbs – and in cannabis, where they may contribute to the overall effect profile.
## What Are Flavonoids?
Flavonoids are secondary plant substances from the polyphenol group. In plants, they serve various functions: UV protection, attracting pollinators through colour, deterring herbivores. For humans, studies show antioxidant, anti-inflammatory and other biological properties.
## Cannabis-Specific Flavonoids: Cannaflavins
Cannaflavin A and B are nearly exclusive to cannabis. A 1985 study (Barrett et al.) showed that cannaflavin A and B have anti-inflammatory properties – approximately 30 times stronger than aspirin in equivalent doses (in vitro). Clinical human studies are still lacking.
## Colour and Flavonoids: Purple and Red Strains Explained
Violet, red or blue cannabis strains owe their colour to anthocyanins, a subclass of flavonoids. Cannabis strains with high anthocyanin content often develop their purple colour at cool temperatures (below 15 °C at night) at the end of flowering. This is purely aesthetic – purple strains are not automatically more potent.
## Flavonoids in the Entourage Effect
Like terpenes, flavonoids could contribute to the entourage effect. Evidence for this is still weaker than for terpenes: research is in an early stage. Full-spectrum extracts contain flavonoids; isolates do not.
About this article
Written and reviewed by the BlattWerk e.V. editorial team — licensed cultivation association in Hildesheim. Our articles are based on current legislation, scientific publications and our practical experience as a Cannabis Social Club.
Last updated: 2026-06-17 · Found an error or something missing? Let us know
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