Quercetin

Research Papers and Clinical Trials

The available research on quercetin spans several therapeutic applications, though the evidence base is still developing across multiple areas.

Preclinical Research

Recent preclinical studies have focused on quercetin's potential in bone health and cancer treatment. A 2026 study published in BMC Biotechnology examined quercetin-loaded polycaprolactone (PCL) scaffolds for bone metastatic tumors, demonstrating both tumor suppression and enhanced bone formation in laboratory models. Another 2026 study in the International Journal of Biological Macromolecules investigated 3D-printed scaffolds combining quercetin with magnesium-doped bioactive glass for osteoporotic bone remodeling, showing effects on bone formation, blood vessel growth, and bone resorption cell inhibition.

Formulation research has explored ways to improve quercetin's bioavailability. A 2026 BMC Chemistry study investigated quercetin dissolved in choline-aspartate ionic liquid, reporting enhanced solubility and antioxidant activity compared to standard formulations.

Additional research has examined quercetin's presence in natural sources, with a 2026 Planta Medica study identifying skin-lightening compounds including quercetin in Achillea filipendulina extracts.

Clinical Trial Evidence

The clinical trial landscape for quercetin includes several completed and ongoing studies, though detailed results are not available from the current evidence:

• Chronic Fatigue: A completed trial (NCT05730660) examined Quercetin Phytosome® for chronic fatigue symptoms
• Pediatric Applications: Two completed trials investigated quercetin-containing supplements in children - one for food allergy nutritional status (NCT06751810) and another evaluating antioxidant compounds for endothelial function in pediatric obesity (NCT04723849)
• Women's Health: Studies have examined quercetin in postmenopausal women with coronary disease (NCT03943459, Phase 3) and endometriosis outcomes (NCT05983224), though their completion status varies

Research Limitations

The current evidence base has several limitations. Many of the preclinical studies are laboratory-based without human validation. The clinical trials listed show completion or unknown status, but actual results and participant numbers are not provided in the available evidence, making it difficult to assess clinical effectiveness or safety profiles.

Disclaimer: This information is for educational purposes only and should not replace professional medical advice. Consult with a healthcare provider before using quercetin supplements, especially if you have medical conditions or take medications.