Relationship: Conjunctivitis and quercetin

Evidence supporting the use of: Quercetin
For the health condition: Conjunctivitis

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Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Quercetin, a flavonoid found in many fruits and vegetables, has attracted scientific interest for its potential role in managing conjunctivitis, particularly allergic conjunctivitis. The primary rationale stems from quercetin’s anti-inflammatory and anti-allergic properties, which have been demonstrated in laboratory and some animal studies. Quercetin is known to inhibit the release of histamine and pro-inflammatory cytokines from mast cells and basophils, both key mediators in allergic responses that contribute to conjunctival irritation and inflammation.

Some small-scale clinical studies and in vitro experiments suggest quercetin may reduce symptoms such as redness, itching, and swelling associated with allergic conjunctivitis. For example, topical quercetin formulations have shown symptomatic improvement in animal models and, to a lesser extent, in human pilot trials. However, the overall quality and quantity of clinical evidence remains limited, with most studies being preliminary, underpowered, or lacking robust controls. No large-scale, high-quality randomized controlled trials have definitively established quercetin’s efficacy for conjunctivitis in humans.

In summary, while there is a plausible scientific basis and early experimental support for quercetin’s use in managing allergic conjunctivitis, the clinical evidence is still emerging and insufficient for strong recommendations. The evidence rating of 2 reflects preliminary support, but more rigorous studies are needed to confirm its effectiveness and safety.

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Other health conditions supported by quercetin

Aging (prevention)
Allergies (food)
Allergies (respiratory)
Alzheimer's Disease
Arteriosclerosis
Arthritis
Asthma
Autoimmune Disorders
Bladder (ulcerated)
Blood Clots (prevention of)
Bruises (healing)
Cancer (natural therapy for)
Cancer (prevention)
Capillary Weakness
Cardiovascular Disease
Cartilage Damage
Cataracts
Chemotherapy (reducing side effects)
Cholesterol (high)
Chronic Obstructive Pulmonary Disorder
Circulation (poor)
Circulation (to the brain)
Cirrhosis of the Liver
Cold Sores
Colds (antiviral)
Colds (decongestant)
Colds (general)
Colds (prevention)
Colds (with fever)
Colitis
Congestion
Congestion (bronchial)
Congestion (lungs)
Congestion (sinus)
Conjunctivitis
Contagious Diseases
Cough (damp)
Crohn's Disease
Cystic Fibrosis
Cytomealovirus
Dementia
Depression
Dermatitis
Diabetes
Diabetic Retinopathy
Edema
Fatigue
Free Radical Damage
Gastritis
Gingivitis
Hair (loss or thinning)
Hypertension
Inflammation
Influenza
Irritable Bowel Syndrome
Liver Detoxification
Lupus
Memory and Brain Function
Multiple Sclerosis
Osteoporosis
Parkinson's Disease
Peripheral Neuropathy
Prostatitis
Psoriasis
Rhinitis
Rhinitis, Allergic
Sinus Infection
Skin (infections)
Sneezing
Triglycerides (high)
Ulcers

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Evidence supporting the use of: Quercetin
For the health condition: Conjunctivitis

Table of Contents

Synopsis

Other ingredients used for Conjunctivitis

Other health conditions supported by quercetin

Products containing quercetin

Health Concerns

Brands

Evidence supporting the use of: QuercetinFor the health condition: Conjunctivitis

Table of Contents

Synopsis

Other ingredients used for Conjunctivitis

Other health conditions supported by quercetin

Products containing quercetin

Evidence supporting the use of: Quercetin
For the health condition: Conjunctivitis