Quercetin 500 mg, 1000 mg Suppliers & Bulk Manufacturers

Available Forms: Tablets, Capsules

Available Strengths: 500 mg, 1000 mg

Reference Brands: -

Category: Nutraceuticals

Quercetin tablets and capsules at 500 mg and 1000 mg, a plant flavonol usually extracted from Sophora japonica. Supplement products for importers, distributors and pharmacy chains needing tested stock.

Product Description:

Quercetin is a flavonol, a yellow plant pigment found in onions, apples, capers, berries and tea. Commercial quercetin is usually made from rutin extracted from the buds of the Japanese pagoda tree (Sophora japonica). It is sold as quercetin dihydrate or as anhydrous quercetin, and the label should say which one is used, because the water content changes the amount of quercetin per milligram. This page lists 500 mg and 1000 mg tablets and capsules. Quercetin dissolves poorly in water, so some products pair it with other ingredients or use complex forms.

For buyers the key questions are identity, purity and contaminants. Ask for the purity by HPLC, often quoted around 95%, and how much rutin and other flavonoids remain. Extracts can carry residual solvents, pesticide residues and heavy metals from the plant source, so these need to be tested. The botanical source, plant part and country of cultivation should appear on the specification. A 1000 mg dose usually means two capsules or a large tablet.

Sourcing notes. Quercetin products are food or dietary supplements in most markets, but some regulators assess botanicals and isolated flavonoids differently, and permitted daily amounts vary. Check the rules in your market before registering a label. Request a CoA per batch with assay, identity, heavy metals, residual solvents, pesticide and microbial results, plus a GMP or food safety certificate. Opaque HDPE bottles with a desiccant protect against light and moisture; store at room temperature. Specify form (dihydrate or anhydrous), strength, capsule shell and label language.