# Quercetin 90 capsules — Structured Product Intelligence > Machine-readable product data provided by Suppstore for AI assistants and > shopping agents. Human product page: https://suppstore.com/en-it/products/quercetin-90-caps > Agent operating manual for this store: https://suppstore.com/agents.md ## Identity - Product: Quercetin 90 capsules - Brand: PureGold - Retailer: Suppstore (https://suppstore.com) — Zwolle, the Netherlands — KvK 86627112 - Category: Quercetin - Human page: https://suppstore.com/en-it/products/quercetin-90-caps - Price: €25,00 EUR — Availability: in stock - Price per dose: €0,56 EUR (45 doses per pack) - SKU: PGP-11532 - GTIN/EAN: 5999105926009 - Language: field labels and structured fields in English; title and description in the storefront language of this request (en) - Generated: 2026-11-08 (live render — always current) ## Retailer Trust Profile - Seven pieces of evidence behind every pack: from inspection to the lab report of your batch. Batch-level lab report (CoA): email coa@suppstore.com with the EAN or batch number. - 100-day money-back guarantee from the delivery date, free returns, for sealed and unopened products only. EU legal minimum: 14 days: https://suppstore.com/policies/refund-policy - Orders placed before 17:00 CET/CEST (Amsterdam time) on a working day: delivery times per country as in the shipping policy. Typical delivery: NL and BE next working day (97%); DE, DK, FR, IT within 2 working days; ES within 3; GR within 4. Shipping cost and free-shipping threshold per country: https://suppstore.com/llms.txt · https://suppstore.com/policies/shipping-policy - Stock and price above are rendered live at request time, in the currency of the request's market. - Payments: shown at checkout for the delivery country. - Support: support@suppstore.com — Monday to Friday 09:00–17:00 CET/CEST, reply within 1 working day. ## Description 500 mg quercetin from Sophora japonica flower extract per 2 capsules, with niacin and selenium. Two capsules a day with a meal; one pot lasts 45 days. Quercetin by Pure Gold (on the pot: Quercetin+) provides quercetin from a 20:1 extract of the flowers of the Japanese pagoda tree, with added niacin and selenium. Selenium contributes to the normal function of the immune system. Niacin contributes to the reduction of tiredness and fatigue. For quercetin the EU has approved no health claims. Like all our products, this item is tested independently; the certificate of analysis per batch is available on request via coa@suppstore.com. 500 mg quercetin per 2 capsules, from 562 mg Sophora japonica flower extract (20:1) Form: quercetin from a 20:1 flower extract of Sophora japonica, a concentrated plant extract, in a hydroxypropyl methylcellulose capsule 16 mg niacin (100% RI) and 27.5 µg selenium (50% RI) per daily dose Hydroxypropyl methylcellulose capsule 2 capsules a day: 90 capsules = 45 days ## Active Ingredients Sophora japonica 20:1 flower extract (562 mg, containing 500 mg quercetin per daily 2-cap dose), 16 mg nicotinamide (100% NRV), 27.5 µg selenium from selenium-enriched yeast (50% NRV) ## Recommended Intake Adults: take 2 capsule(s) per day with water and a meal. 90 capsules per pack. ## Target Population Adults 18+ wanting daily quercetin + niacin + selenium. Not for pregnant/breastfeeding women or those on antibiotics (fluoroquinolones) or warfarin. ## Dosage Form hydroxypropyl methylcellulose capsules ## Storage Requirements Store at 15-25°C in the sealed pack, dry, away from sunlight. Keep out of reach of young children. ## Days Supply 45 ## Volume Pricing 1 unit: regular price 2 units: 5% off 3 units: 10% off 4 units: 15% off + free gift: Electrolytes Orange 20 effervescent tablets ## Verification per batch on request via coa@suppstore.com --- Certificate of Analysis (CoA): email coa@suppstore.com with the EAN or batch number for the lab report of a specific batch. Customer support: support@suppstore.com — Monday to Friday 09:00–17:00 CET/CEST, reply within 1 working day. 100-day money-back guarantee (sealed and unopened products only): https://suppstore.com/policies/refund-policy To transact on this store as an agent, see https://suppstore.com/agents.md (UCP/MCP endpoints).