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Cooper Complete Quercetin Complex Supplement Bottle
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Cooper Complete Quercetin Complex Supplement Bottle

Quercetin Complex

Updated Formula Sept ’21 Quercefit® Quercetin Phytosome, digestive enzyme bromelain, and vitamin C support respiratory and immune health†.

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What It Is

Cooper Complete® Quercetin Complex Supplement combines quercetin and bromelain to support cardiometabolic function, a healthy gastrointestinal tract, and immune health†.

The quercetin in this product is Quercefit® Quercetin Phytosome, which has been shown to increase peak plasma quercetin levels by 20-fold compared to standard quercetin.

How to Use:

As a dietary supplement, take one (1) vegetarian capsule twice daily or as directed by your health care professional. Each bottle contains 60 capsules.

How It Helps

Cooper Complete Quercetin Complex is a custom formulation containing Quercefit® Quercetin Phytosome, bromelain, and vitamin C.

Each bottle of Quercetin Complex contains 60 vegetarian capsules. The daily recommended serving is one capsule twice daily or as recommended by your physician or health care professional.

This product is gluten-free, Non-GMO.

Cooper Complete products are verified and lot tested. If you would like a copy of a Certificate of Authenticity for a specific product or would like to learn more about our testing process and results, please contact us at or call our team directly at 888.393.2221 9 a.m. until 5 p.m. Monday-Friday central time (CST).



Quercetin Complex Supplement Facts

Serving Size: 1 vegetarian capsule
Servings Per Container: 60
Ingredients Daily
% Daily
Vitamin C (as ascorbic acid) 100 mg 111%
Quercefit® Quercetin Phytosome (Sophora japonica extract [flower] and sunflower phospholipid complex) 250 mg *
Bromelain (Ananas comosus, pineapple stem) 100 mg *

*Daily Value not established.
Other ingredients: Hydroxypropyl methylcellulose (capsule), microcrystalline cellulose, and ascorbyl palmitate.

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This product is gluten-free, non-GMO.

Quercefit® is a registered trademark of Indena S.p.A., Italy.

While we strive to ensure the label information on this site represents the label on the product available for purchase, products are updated from time to time. Please consult the label on the product you purchase for the most accurate ingredient and allergen information.

Formula: 81601-100-PL-84121312 V0521
Item Number: 294
SKU: 816899000294

Frequently Asked Questions

I’ve heard quercetin can be poorly absorbed. How well is Cooper Complete Quercetin Complex absorbed?

Quercefit® Quercetin Phytosome is used in this formula, as it increased peak plasma quercetin levels by 20-fold compared to standard quercetin.

Are there any potential drug interactions with Quercetin Complex?

The Quercetin in Quercetin Complex may react with estradiol, immune-suppressive drugs, and calcium channel blocks. You must discuss this, and other supplements you take, with your physician or health care provider.

Can this product be taken in conjunction with the prescription digoxin?

No. You should not take Quercetin Complex if you take the prescription medication digoxin.

Where does the Quercetin in Quercetin Complex come from?

The Quercetin in Cooper Complete Quercetin Complex is derived from seeds and pods of the dimorphandra mollis deciduous tree.

Does Quercetin Complex affect vision?

Studies suggest Quercetin may support healthy vision by mediating sorbitol production†.

Why was Quercetin Complex Supplement added to the Cooper Complete line of dietary supplements?

Quercetin Complex Supplement was added to the physician formulated line of Cooper Complete Nutritional Supplements to support immune health function. The suite of Cooper Complete Immune Health Supplements also includes multivitamins, omega-3 fatty acids, vitamin C, vitamin D3, Turmeric Curcumin Complex, and the mineral zinc.

Do Cooper Clinic Physicians recommend Quercetin Complex?

Yes. Emily Hebert, MD, Cooper Clinic Platinum Physician suggests daily supplementation of quercetin supplements to support a healthy immune system.

Is it true that quercetin can impair iron absorption?

Quercetin is a polyphenol found in abundant quantities in apples, citrus, onions, green leafy vegetables, coffee, and tea. Studies show coffee and tea can inhibit iron absorption, particularly the non-heme form of iron found in plants and grains. Plant forms of iron are as easily absorbed by the body as animal forms of iron. The recommendation for coffee and tea drinkers taking supplemental iron is to avoid these beverages for an hour before and after taking iron supplements. For this reason, we suggest Iron supplements (including multivitamins with iron) and Quercetin Complex be taken separately.

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