• 30 vegetarian capsules
  • Item # 02302


  • 30 vegetarian capsules
  • Item # 02302

Highly absorbable quercetin for immune & cardiovascular support

Our Bio-Quercetin supplement uses a quercetin encased in a plant-derived phytosome, which makes absorption easier. Our quercetin is up to 50 times more bioavailable than a dose of standard quercetin.

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I’ve used Quercetin for a number of years.


I really like this product.


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  • This Item: Bio-Quercetin, 30 vegetarian capsules
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Bio-Quercetin, 30 vegetarian capsules - Life Extension
Bio-Fisetin, 30 Vegetarian capsules - Life Extension

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30 vegetarian capsules


$0.30/count | 30 Day Supply

Quercetin is a bioflavonoid that supports healthy immune function and supports a healthy inflammatory response, promotes cardiovascular & endothelial health and more.

Our Bio-Quercetin offers 50 times greater absorption than traditional quercetin, making it ideal for supporting a healthy inflammatory response and promoting immune and cardiovascular health.

Bio-Quercetin Benefits

  • Provides up to 50x more bioavailability than traditional quercetin
  • Promotes immune, cardiovascular & endothelial health
  • Helps inhibit oxidative stress & supports a healthy inflammatory response

Superior Absorption

Poor absorption can prevent one from taking advantage of the profound effects of quercetin. Research shows that if quercetin is encapsulated in a planted-derived phytosome, the absorption is increased up to 50 times.

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More facts about Bio-Quercetin

Our Bio-Quercetin contains a form of quercetin that has been integrated into a phytosome. A phytosome is a tiny sphere made out of plant-derived phospholipids. By combining quercetin with this phospholipid-based delivery system, the quercetin in this formula is more bioavailable, making it easier to absorb and more readily used by the body.1

These statements have not been evaluated by the Food and Drug Administration.
These products are not intended to diagnose, treat, cure, or prevent any disease.
  1. Eur J Drug Metab Pharmacokinet. 2019 Apr;44(2):169-177.
  2. Wiad Lek. 2017;70(4):707-711.
  3. J Nutr. 2015;145(7):1459-1463.
  4. J Nutr. 2007;137(11):2405-2411.
  5. Pharmacol Res. 2010;62(3):237-242.
  6. J Am Heart Assoc. 2016;5(7)
  7. Br J Nutr. 2016;115(5):800-806.

Serving Size 1 vegetarian capsule

Amount Per Serving

Bio-Quercetin phytosome


10 mg quercetin [from Japanese sophora concentrate (flower bud)], phosphatidylcholine complex [from sunflower])  

Other ingredients: microcrystalline cellulose, vegetable cellulose (capsule), vegetable stearate, silica.


Dosage and Use
  • Take one (1) capsule daily, or as recommended by a healthcare practitioner.
  • 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.

To report a serious adverse event or obtain product information, contact 1-866-280-2852.

Actual Size

Pill Size Image

Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of Life Extension. We do not verify or endorse any claims made in these reviews. Please read the full product reviews disclaimer.

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