Natural Factors Quercetin Complex Capsules


Quercetin Complex is an exceptional antioxidant formula specially developed to maintain optimal health, combat disease, and prevent accelerated aging. Quercetin Complex is considered safe and suitable for long-term use by adults.

    • Supports optimal health by preventing accelerated aging
    • Helps combat free radical formation from normal metabolic processes and during the development of disease
    • Helps prevent the development of allergies, inflammation, diabetes, circulatory disorders, and heart disease

Directions: 1 capsule 1-3 times per day or as directed by a health professional.

Supplement Facts
Serving size 1 Capsule
Serving size:90
Servings: Amount Per Serving
Quercetin 250 mg
Grape seed extract (Vitis vinifera) (80% proanthocyanins) 166.6 mg
Blood orange extract (Citrus sinensis) (fruit) (30:1) 33.3 mg
Turmeric extract (Curcuma longa) (root) (95% curcuminoids) 6.6 mg
Coenzyme Q10 ubiquinone (microorganism) 10 mg
* Daily Value not established.
1 capsule 1-3 times per day or as directed by a health professional.

Customer Reviews

Based on 12 reviews
Frank Stratton
Quercetin for an old guy

I bought this product for two reasons.
1) It had a number of recommendations for improving my immune system, and
2) A researcher in Montreal was considering it as a possible use in the fight against COVID-19.
I'm not sure how one can feel that you immune system has improved other than having someone cough on you and get really sick or not, perhaps.
If I get COVID-19 and recover, I will update this review. If I don't survive, well, this will be my last comment.

Kimberly nixon
Excellent product!!!

Excellent product!!!


A naturopath recommended Quercetin for allergies, and it has helped my husband and I, as well as others I have recommended it to.

Jennifer Bari

I take this supplement religiously, and if I don't, then I do notice my immune weakened. It is a must have in my medicine cabinet!


Fast service !

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