Quercetin dihydrate has a variety of important biological activities:
- Antioxidant activity: scavenges free radicals and protects cells from oxidative damage
- Anti-inflammatory effect: inhibits the release of inflammatory mediators and inflammatory response
- Kinase inhibition: PIM1 kinase inhibition (IC₅₀ = 43 nM), PI 3-K inhibition (IC₅₀ = 3.8 µM)
- Enzyme inhibition: phospholipase A2 inhibition (IC₅₀ = 2 µM)
- Vascular protection: improves endothelial function and reduces the risk of cardiovascular disease