01/08/2026
Quercetin is a plant-derived flavonoid known for its broad therapeutic properties.
Found in foods like apples and onions, it provides:
• Strong antioxidant protection
• Significant anti inflammatory effects
• Notable antiviral action
Quercetin also enhances the function of natural killer cells, which play a central role in immune defense.
These qualities make it a key ingredient in True Protocols Immune Support. 💙