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Quercetin Plus

6 Customer Reviews Write a Review
Maximum Purchase:
3 units

Supports both the cardiovascular and immune systems, histamine clearance and helps reduce seasonal symptoms.


Quercetin Plus helps reduce inflammation, support histamine clearance and aid in seasonal symptom relief. Also provides support for the cardiovascular and immune systems.

Research supports the findings that Quercetin may support a healthy response to occasional inflammation following sports activity and provide relief from seasonal symptoms. And Quercetin has been used for decades for healthy antioxidant support.

Quercetin Plus with the added ingredient of Bromelain was developed by Dr. Peter J. D'Adamo, author of Eat Right 4 Your Type, to give your body the antioxidant support it needs for healthy function.

Quercetin is an all-natural, plant-derived bioflavonoid 400 times more potent than vitamin E that supports protection against free radical damage—and it's suitable for all blood types and GenoTypes.

Quercetin Plus is produced in the USA and is GMP (Good Manufacturing Practices) quality assured and certified product as outlined by the Natural Products Association and is suitable for all blood types.

90 vegetarian capsules
Suggested Use: One (1) capsule twice daily on an empty stomach, or as directed by physician.
Is this Product Vegetarian? Yes
Usable by All Types: Yes

This 100% vegetarian product contains no sugar, salt, gluten, wheat, yeast, corn, soy, eggs or dairy, no preservatives, color or flavors, and no artificial ingredients.

For California Residents

Prop 65 Warning

WARNING: Consuming this product can expose you to Lead, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to

Write a Review
  • Quercetin Plus

    Posted by Terry on Sep 4th, 2020

    This product works for seasonal allergies! I have been using it for years and so this review is long overdue. I would highly suggest using it if you have seasonal allergies. Thank you Dr. D'Adamo!

  • Great for spring hayfever!

    Posted by Bonnie on Apr 25th, 2019

    My husband and I use this for symptoms of spring allergies and it really helps eliminate the symptoms. I also take it along with Collinsonia in the early morning if I wake up with a sinus headache. Helps get rid of it quickly! This is a great product. I have tried other brands of Quercetin and this one works the best plus has no un-wanted additives, like so many brands out there. One of my formerly fave supplement companies from 35 years ago (when I ran a health food store) even puts Corn in their Quercetin! Definitely an "Avoid" food for me.

  • Fights colds effectively

    Posted by T. Dan Tolleson on Dec 1st, 2017

    One evening, I was feeling the distinct onset symptoms of a serious cold: sore throat, congestion, tiredness. I took one Quercetin. Next morning -- pssst! Back to normal, with full energy and no symptoms. Of course the other supplements that I take regularly -- Basic Pack O, Hunter supplements, Intrinsa, etc. -- probably had something to do with quick recovery, but there's nothing to substitute for the strong anti-oxidants in Quercetin.

  • Miracle Product!

    Posted by Robyn McLaughlin on Jul 16th, 2017

    My husband and I both use this along with bromelain 500 mg as support for seasonal allergies (sinus), antioxidant support along with anti-inflammatory properties for muscle pain. It has greatly reduced and almost completely eliminated the need for allergy or pain meds. It is both preventative (we take one dose daily) and if symptoms flare up (sinus or pain) take an extra dose. We are in our mid-50's and suffered with severe seasonal allergies for most of our adult lives. No longer. Blessings to Dr. D for providing natural support.

  • Really works fast!

    Posted by Anonymous on May 22nd, 2017

    My husband and I recently started using this product for different issues for each of us. He had a lot of hay fever this spring and reactions to dust. Since giving him 1 capsule twice a day on an empty stomach, he has had no more sneezing episodes nor coughing in the night. I am taking it to alleviate food sensitivities, along with Deflect, and it has helped with that too.

  • Great immune booster for college students

    Posted by Heather on Feb 27th, 2015

    My college age daughter loves this immune boost. She even called to have me mail her some. Combined with Proberry liquid this powerhouse combo kept her healthy during her freshman year in college.

90 vegetarian capsules
Suggested Use: 1 capsule, twice daily on an empty stomach

Is this Product Vegetarian? Yes

Practitioner Technical Information

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Quercetin Plus TRM

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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