No Thanks

Your 10% Off Promo Code is on the Way! Thanks for signing up for emails.

You're now signed up to receive exclusive deals and savings opportunities!

Thanks again for connecting with us. Keep an eye on your inbox — your first coupon is on its way!

Thank You! This email address is already signed up

You are signed up for the following:

  • Offers
  • Recipes
  • E-Newsletter
  • Updates & Reminders

Thank you for your interest and be assured that you will continue to receive our emails at this address.

Look for your next communication from us within the next week.


We are having trouble processing your request.

Our apologies!

Please try again later.

Search Please enter an item number or keyword
Shop by
Do You
Need Help?

Swanson Ultra

Maximum Strength Quercetin

Buy 1 Get 1 Free

Maximum Strength Quercetin

Item: SWU889

  • Highly pure quercetin for maximum absorption potential

  • Unique antioxidant with key benefits for heart health, immune system and more*

  • Also a favorite among athletes for its endurance and recovery support*

800 mg 30 Veg Caps
Veg Caps Size: 00

Now 2 for $21.99
Limit: 3
Regular $22.59
MSRP $31.49
Save 65%
Yes! I want 10% off and free shipping over $50 on my next automatic shipment of this item.  days. Learn more
In Stock

Supplement Facts

Serving Size 1 Veggie Capsule

  Amount Per Serving % Daily Value
Quercetin {from Quercetin anhydrous[from Dimorphandra mollis (dried pods)]} 800 mg *

*Daily Value not established.

Other ingredients: Hypromellose (vegetable capsule), magnesium stearate, silica.

Suggested Use: As a dietary supplement, take one veggie capsule per day with water.

Relative Size

Printable Size Guide

Shipping Weight

.11 lbs

  • Highly pure quercetin for maximum absorption potential

  • Unique antioxidant with key benefits for heart health, immune system and more*

  • Also a favorite among athletes for its endurance and recovery support*

Quercetin is in high demand today among active individuals looking to boost energy and counter the physical stress of modern life.* The powerful flavonoid nutrient is found in some foods, but only in small amounts. Supplements are the best way to get functional doses of quercetin. But did you know that quercetin comes in two forms?

Common supplements supply quercetin dihydrate, which is only about 85% quercetin by weight. Quercetin anhydrous, by contrast, is 98% pure quercetin, making it the preferred form for high-quality, high-value supplementation. Over three decades of scientific research support quercetin's benefits as a unique antioxidant with specific benefits for cardiovascular health, nervous system function, immune system health, joint comfort and physical performance.*

Fitness enthusiasts value quercetin as an aid for endurance and recovery, while aging individuals find it beneficial as a daily supplement for total body defense and comfort.* New Maximum Strength Quercetin from Swanson Ultra features 800 mg of high-purity quercetin anhydrous in every capsule for reliable dietary support.

Swanson Ultra Maximum Strength Quercetin Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

Maximum Strength Quercetin is rated 4.1 out of 5 by 11.
Rated 2 out of 5 by from No noticeable difference Been taking this for 1.5 months now, and have not noticed anything. Taking this with Berberine and AMP-K
Date published: 2017-03-22
Rated 2 out of 5 by from Looking for alternative I was hoping this would be an alternative to sinus meds but does not work for me, I will be returning.
Date published: 2017-02-20
Rated 5 out of 5 by from This is a keeper. Queratin is one product that I will not allow myself to run out of. This gives me the openness for the lungs to breath at peace. I am a natural thinker, vegetarian 50 years that treats this body with respect .....thank you Swanson's Herbs for your help.
Date published: 2016-04-13
Rated 5 out of 5 by from THE BIG Q - - - A MAJOR LEAGUE ALL-STAR MVP Quercetin is a cutting edge, high tech major league nutrient member of the bioflavonoid family (one of my favorites since I experienced its results back in the 1950s) that benefits one in many, many ways throughout their entire body. The list of Quercetin’s value is very long. Suffice to say that it is an excellent and unique antioxidant. Moreover, Quercetin is valuable to the brain, heart, circulatory system, utilization of nutrients, immune system, nervous system, the joints, and even fitness / endurance / and recovery after physical performance. Wow! Not much, huh? Double Wow!! Obviously, The Big Q is a remarkable powerhouse that I want on my team. With all those documented benefits (You can read about them in Swanson’s product description on their website, as well as other reliable places online.), it sounds to me like Quercitin will be contributing to my overall wellness and longevity in so many ways that I want for a long, long time. To me, The Big Q is a gem I cannot afford to be without. This particular Swanson Ultra Maximum Strength Quercetin 800 mg. capsule is in the preferred, more potent and effective 98% pure anhydrous form. While Quercetin is not a cheap product, to my way of thinking, it is worth the investment. Throw in Swanson’s pricing, especially right now that it is on BOGO, and this is a Grand Slam Home Run. An MVP to be sure. I like it a lot, and I recommend it big time. Works for me.
Date published: 2016-04-03
Rated 5 out of 5 by from We take quercetin to help with the absorption of curcumin and resveratrol. It works quite well.
Date published: 2016-01-30
Rated 2 out of 5 by from Maximum Strength? When i compared these "maximum strength" capsules (800mg) to Swanson's other quercetin capsules (650mg), i realized that i had paid almost twice the price for a marginal increase in dose.
Date published: 2015-02-01
Rated 4 out of 5 by from APPRECIATION!! I appreciate Swanson Labs for a better quercetin via purity and absorption who new?I purchase when there is a buy 1 get 1 free option for the better value.I still take the other form Quercetin dihydrate in a now discontionued allergy formulation and a resveratrol formula hopefully other manufacturers will update there formulations as SWANSON has with this Quercetin anhydrous from dried pods.THANKS for introducing this product to the consumer.I APPLAUD YOUR INNOVATION!!Perhaps one day Swanson formulas can exclude filers,binders & one day I hope the website could have expiration dates especially for the items via buy 1 get 1 free or clearance so we as consumers can stock up when sale prices exist...THANKS AGAIN SWANSON YOU KEEP ON BRINGING I'LL KEEP ON BUYING!!!!
Date published: 2015-01-25
  • y_2017, m_12, d_14, h_19
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.3
  • cp_1, bvpage1
  • co_hasreviews, tv_4, tr_7
  • loc_en_US, sid_SWU889, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_swansonhealth
Swanson Quality Assurance

Why Shop Swanson®?

We know how important your health is to you and your loved ones. That’s why we’re focused on delivering only high quality products you can trust at the best value.

Our lab evaluates every product to make sure it’s compliant with strict standards and government regulations, and we fully believe in and stand behind our products. If you’re dissatisfied for any reason, we’ll give you a full refund and pay return shipping.

Swanson's Standards

We are dedicated to offering the highest quality products at the best price. Find out more about how we ensure such a high standard in everything we do.

Learn More
Customer Service
About Swanson

Easy Refill

  • Get your favorite products delivered automatically
  • 10% off future orders of Swanson brand products in your subscription
  • FREE standard shipping on all future orders over $50
  • Control the frequency, delivery date, item quantity... or cancel at any time
  • Email reminders before each delivery
See all FAQs here