Quercetin Powder from Sophora Japonica for Supplements

Quercetin powder is a plant-derived flavonoid ingredient commonly sourced from Sophora japonica for nutraceutical product development. The accompanying images show a yellow-green to olive-green powder with a finely divided, slightly clustered appearance, presented in a clear glass dish. The botanical reference shows white flowers and green leaves, although the photographs alone cannot establish the material’s chemical identity or botanical origin.

The supplied reference listing describes a 95% quercetin product. This is a supplier-advertised specification rather than a verified result for the photographed material. Manufacturers considering this ingredient for capsules, tablets, and dry powder blends should evaluate the intended formulation and request product-specific documentation. Procurement teams can discuss assay requirements, analytical methods, samples, packaging options, and batch traceability before committing to bulk supply. Identity, composition, and regulatory suitability should be confirmed against the actual batch and intended market.