⚠ Moderate evidence exists, but dose is below effective threshold
This is a limiting factor: Dose is likely below clinically useful levels. The declared form supports strong absorption.
Scientific evidence
Guo et al. meta-analysis quercetin and antioxidant markers
Phytotherapy Research • 2017
PMID: 27995808.0
Nieman et al. RCT quercetin and upper respiratory tract infections
Nutrients • 2007
PMID: 19965765.0
