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Life Extension, Optimized Quercetin, 250 mg, 60 Veggie Caps

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Out of Stock
  • Shipping Weight: 0.18 lbs (0.08 kg)
  • Product Code: LEX-13096
  • UPC Code: 737870130963
  • Package Quantity: 60 Veggie Caps
  • Dimensions: 2.1 x 2.1 x 3.9 in, 0.15 lbs (0.07 kg)
Product Overview


  • For Longer Life
  • Food-Based Bioflavonoid Complex
  • Dietary Supplement

Optimized Quercetin

 Quercetin is a bioflavonoid that supports cellular health and function. In human cell culture studies, it has been shown to block the manufacture and release of inflammation-causing substances, which can help support a healthy immune response to the seasonally changing environment. It also helps promote a healthy cardiovascular system by preserving endothelial integrity and supporting healthy blood glucose levels for those already within normal range. Optimized Quercetin is a proprietary formulation that sets the "gold standard" for high-quality quercetin derived from a food-source blend.

Suggested Use

Read the entire label and follow the directions carefully prior to use.

Take one (1) capsule once or twice daily with or without food, or as recommended by a healthcare practitioner.

Other Ingredients

Microcrystalline cellulose, vegetable cellulose (capsule), silica maltodextrin, vegetable stearate.


  • Keep out of reach of children.
  • Do not exceed recommended dose.
  • Do not purchase if outer seal is broken or damaged.
  • When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.

Store tightly closed in a cool, dry place.

Supplement Facts
Serving Size: 1 Vegetarian Capsule
  Amount Per Serving % DV
Vitamin C (from ascorbic and Camu Camu berry extract) 30 mg 50%
Optimized Quercetin Food Blend
(supplying 250 mg quercetin)
[Quercetin dihydrate buckwheat (Fagopyrum esculentum)
(sprout), apple (Pyrus malus) polyphenol extract (fruit), onion (Allium cepa L.) extract (bulb) (providing polyphenols)]
500 mg **
Camu Camu (Myrciaria dubia) extract (wildcrafted berry) 60 mg **
** Daily Value not established.
iHerb Customer Reviews


Posted by Reviewer1548715 on Sep 23, 2016

I used Quercetin to successfully help with a sinus infection. IN ADDITION, and in combination with Nature's Answer Resveratrol, discovered they have a strong anti-proliferate effect on CLL (chronic lymphocytic leukemia) in this body: Every four months, my CBC shows a noteworthy decline in WBC! My hematologist is stunned. He asked for a list of supplements I use. RSV and Quercetin are at the top. Best wishes to everyone for good heath, Ernest - NYC

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So Disappointed...not for weight loss

Posted by Reviewer3127155 on Jan 26, 2016

Maybe this is only for allergies. But I read several articles and reports that this product along with Resveratrol (which I also bought) would help with losing weight, since it tricks the body into thinking it is calorie deficient. But nothing...nada. I have taken it for about 4 weeks religiously. About 2,000 mg a day as per the information I read. So if you are wanting it for weight loss - I would forget it.

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Posted by 4901395105919969587 on Dec 28, 2015


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Posted by 5738582667931555743 on Jul 17, 2013

I'll order this item again. This product is very good.

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The best quercetin product I have tried

Posted by 5314020378583434866 on May 30, 2013

This is fantastic for clearing my stuffy sinuses, it starts working within 20 minutes of taking it. The dose is just right for me, one tablet a day and possibly another in the evening if my allergies are really bad. I have tried lots of other brands but this one just works!

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