Where it appears
Common across many fruits, vegetables, and botanical materials.
What is established
Plant pigmentation and protection is the appropriate plant-level description. Analytical identification and general flavonoid chemistry are more established than customer-facing outcome claims.
What remains uncertain
Dose, preparation, and route matter; food research is not evidence for smoke or vapor effects.
What shoppers should remember
Flavonoids are not cannabinoids or terpenes. Color alone cannot verify potency, effects, freshness, or quality. Product-specific composition requires reliable testing, and inhalation has route-specific risks.