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

अन्य नाम: 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

स्वास्थ्य स्थिति	ग्रेड	अध्ययन	प्रतिभागी
Allergic Rhinitis	C	5	400	देखें →

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)

अपने स्वास्थ्य सेवा प्रदाता को आप जो भी सप्लीमेंट लेते हैं उनके बारे में हमेशा सूचित करें।

Related Ingredients

Glutathione Astaxanthin Resveratrol Curcumin

त्वरित तथ्य

खुराक: General: 500-1,000 mg/day; Immune_Support: 500-1,500 mg/day
रूप: capsule tablet powder
प्राकृतिक स्रोत: Onions, Apples, Berries, Capers, Broccoli, Red wine, Green tea
अधिकतम सीमा: No established UL; GRAS up to 500 mg/day per FDA
सर्वोत्तम समय: With meals (fat-containing meals improve absorption); often paired with vitamin C or bromelain for enhanced bioavailability

साक्ष्य सारांश

Allergic Rhinitis C

FDA अस्वीकरण: इन कथनों का Food and Drug Administration द्वारा मूल्यांकन नहीं किया गया है। इस वेबसाइट पर उत्पादों और जानकारी का उद्देश्य किसी बीमारी का निदान, उपचार, इलाज या रोकथाम नहीं है। प्रस्तुत साक्ष्य ग्रेड प्रकाशित पीयर-रिव्यूड अनुसंधान के हमारे विश्लेषण पर आधारित हैं और चिकित्सा सलाह नहीं हैं। कोई भी सप्लीमेंट शुरू करने से पहले हमेशा अपने स्वास्थ्य सेवा प्रदाता से परामर्श करें।