Quercetin, a natural compound tied to what all of us seek: better longevity, heart health, endurance, immune system and more.  Quercetin is a type of flavonoid antioxidant that’s found in plant foods, including leafy greens, tomatoes, berries and broccoli.  It’s technically considered a “plant pigment,” which is exactly why it’s found in deeply colored, nutrient-packed fruits and veggies.  quercetin plays an important part in fighting free radical damage, the effects of aging and inflammation.
Quercetin is a kind of expectorant drug commonly used in Chinese clinical practice. It can remove phlegm, relieve cough and asthma, and also has the effect of lowering blood pressure.

• Appearance: Yellow powder
  
• Solubility: Practically insoluble