What is the recommended dosage for Quercetin?

General: 500-1,000 mg/day; Immune Support: 500-1,500 mg/day

What are the side effects of Quercetin?

Potential side effects include: Headache, Tingling in extremities, Gastrointestinal discomfort, Low oral bioavailability (addressed by phytosome formulations).

What is quercetin and how does it support the immune system?

Quercetin is a flavonoid found in onions, apples, and berries. It has been studied for its antioxidant and anti-inflammatory properties, including its ability to inhibit pro-inflammatory cytokines and stabilize mast cells involved in allergic immune responses.

What dosage of quercetin has been studied for immune health?

Clinical trials have used quercetin at doses of 500–1,000 mg per day, often co-administered with vitamin C or bromelain to enhance absorption. Study durations range from 2 to 12 weeks depending on the outcome measured.

What are the potential side effects of quercetin?

Quercetin is generally well tolerated at doses up to 1,000 mg per day. High doses may cause headache, tingling, and gastrointestinal discomfort. Quercetin may interact with certain antibiotics and cyclosporine by affecting drug metabolism.

Quercetin
Quercetin

antioxidant

Diğer adları: Quercetin Dihydrate, Isoquercetin, Quercetin Phytosome

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About

Quercetin is a flavonol polyphenol with antioxidant, anti-inflammatory, and immunomodulatory properties. It inhibits mast cell degranulation and histamine release, modulates NF-kB and NLRP3 inflammasome pathways, and may act as a zinc ionophore to enhance intracellular zinc uptake. GRAS-designated by the FDA.

How It Works

Flavonol polyphenol that inhibits mast cell degranulation and histamine release; modulates NF-kB and NLRP3 inflammasome pathways; may support zinc ionophore activity to enhance intracellular zinc uptake.

Evidence For Conditions

Sağlık Durumu	Derece	Çalışmalar	Katılımcılar
Allergic Rhinitis	C	5	400	Görüntüle →

Side Effects

Headache
Tingling in extremities
Gastrointestinal discomfort
Low oral bioavailability (addressed by phytosome formulations)

Drug & Supplement Interactions

Cyclosporine (may increase drug levels)
Fluoroquinolone antibiotics (may interfere with bacterial target)
CYP3A4 and CYP2C8 substrates (may inhibit metabolism)

Kullandığınız tüm takviyeler hakkında sağlık uzmanınızı mutlaka bilgilendirin.Kullandığınız tüm takviyeler hakkında her zaman sağlık uzmanınızı bilgilendirin.

Related Ingredients

Glutathione Astaxanthin Resveratrol Curcumin

Kısa Bilgiler

Dozaj: General: 500-1,000 mg/day; Immune_Support: 500-1,500 mg/day
Formlar: capsule tablet powder
Doğal Kaynaklar: Onions, Apples, Berries, Capers, Broccoli, Red wine, Green tea
Üst Sınır: No established UL; GRAS up to 500 mg/day per FDA
En İyi Zaman: With meals (fat-containing meals improve absorption); often paired with vitamin C or bromelain for enhanced bioavailability

Kanıt Özeti

Allergic Rhinitis C

FDA Sorumluluk Reddi: Bu ifadeler Gıda ve İlaç Dairesi (FDA) tarafından değerlendirilmemiştir. Bu web sitesindeki ürünler ve bilgiler herhangi bir hastalığı teşhis etmek, tedavi etmek, iyileştirmek veya önlemek amacıyla tasarlanmamıştır. Sunulan kanıt dereceleri, yayımlanmış hakemli araştırmalarımızın analizine dayanmaktadır ve tıbbi tavsiye niteliği taşımamaktadır. Herhangi bir takviye rejimine başlamadan önce her zaman sağlık uzmanınıza danışın.