Optimized Quercetin 250 mg®

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.

Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.

Serving Size: 1 Vegetarian Capsule(s) · 1–2 per day

Not Present

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  Life Extension 250 mg 60 Capsules

  iHerb4.8(1600)

  $16.50
• 

  Bio-Quercetin Life Extension

  Life Extension4.8(1500)

  $9.00Lowest
• 

  Life Extension Optimized Quercetin 250 mg 60 vegcaps

  personalpower4.8(1600)

  $22.00
• 

  Life Extension Bio-Quercetin

  Walmart - Peak10 Health LLC4.8(1500)

  $25.65
• 

  Life Extension Vitamin C and Bio-Quercetin Phytosome

  Life Extension4.8(3100)

  $22.50
• 

  Life Extension Fast-C and Bio-Quercetin Phytosome

  Life Extension4.7(121)

  $19.50
• 

  Optimized Quercetin - 60 Caps

  hyperbaric-spa.com4.8(1600)

  $26.08
• 

  Life Extension - Optimized Quercetin

  Pure Prescriptions4.8(1600)

  $22.00

Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.

Showing representative supplement & health retailers — search above for stores in your area.

• The Vitamin Shoppe

  4.4 (61)

  Vitamin & supplements store

  3538 Zafarano Dr, Santa Fe, NM 87507

  Directions(505) 438-1184

• GNC

  2.7 (47)

  Vitamin & supplements store

  3003 S St Francis Dr spc b, Santa Fe, NM 87505

  Directions(505) 501-8867

• Daisy's Holistic Health

  4.5 (21)

  Vitamin & supplements store

  4056 Cerrillos Rd Unit D-1, Santa Fe, NM 87507

  Directions(505) 780-8687

• Shaklee Products Elena Giacomin Dennis

  Vitamin & supplements store

  2 Avenida Buena Ventura Pl, Santa Fe, NM 87508

  Directions(505) 690-2327

• Milagro Herbs, Inc.

  4.9 (42)

  Herbal medicine store

  1500 5th St Unit #6, Santa Fe, NM 87505

  Directions(505) 820-6321

• Fruit Of The Earth Natural Health

  4.6 (20)

  Health and beauty shop

  909 Early St, Santa Fe, NM 87505

  Directions(505) 231-0087

• Ralph's Healthy Choice

  5.0 (1)

  Health food store

  223 N Guadalupe St #461, Santa Fe, NM 87506

  Directions(505) 470-3425

• Whole Foods Market

  4.1 (1765)

  Grocery store

  753 Cerrillos Rd, Santa Fe, NM 87505

  Directions(505) 992-1700

• Potential synergistic supplementation of NAD+ promoting compounds as a strategy for increasing healthspan

  A Sharma, S Chabloz, RA Lapides, E Roider… - Nutrients, 2023 - mdpi.com

  … supplementation at 250 mg was shown to be well tolerated, efficacious when increasing the NAD+/NADH ratio, and improved muscle function in aged but otherwise healthy … , quercetin …

  202374 citations

• Dose–response to 3 months of quercetin-containing supplements on metabolite and quercetin conjugate profile in adults

  L Cialdella-Kam, DC Nieman, W Sha… - British journal of …, 2013 - cambridge.org

  … mg/d of quercetin, 125 mg/d of vitamin C and 5 mg/d of niacin; Q-1000 ¼ 1000 mg/d of quercetin, 250 mg/d of vitamin C and 10 mg… plasma quercetin concentrations in healthy humans. J …

  201374 citations

• Flavonoid-rich foods (FRF): A promising nutraceutical approach against lifespan-shortening diseases

  AHW Janabi, AA Kamboh, M Saeed… - … of basic medical …, 2020 - pmc.ncbi.nlm.nih.gov

  … By using healthy ileostomy volunteers in an experiment, it is … of quercetin glucosides from intestinal epithelial cells (46). … flavonol quercetin, and isoflavones are popular supplements …

  2020187 citations

• Impact of polyphenolic-food on longevity: An elixir of life. An overview

  R Meccariello, S D'Angelo - Antioxidants, 2021 - mdpi.com

  … Polyphenol compounds such as resveratrol, quercetin, … health products and polyphenols, in addition to their widespread availability and accessibility through nutritional supplements …

  2021125 citations

• Dietary supplements and natural products: an update on their clinical effectiveness and molecular mechanisms of action during accelerated biological aging

  Y Chen, S Hamidu, X Yang, Y Yan, Q Wang, L Li… - Frontiers in …, 2022 - frontiersin.org

  … supplements can complement modern medicines, which do not materially slow down aging processes to extend an individual’s lifetime and promote healthy … products, quercetin can …

  202268 citations

• Unlocking the code of human longevity: a comprehensive review of anti-aging management based on dietary phenolics

  J Zhang, CH Tang - Food Science and Human Wellness, 2025 - sciopen.com

  … outcomes of phenolic diets for life extension using randomized, … nuts was associated with longer healthy life spans in older adults… quercetin, with an in vitro cellular limit of 100 μM and an …

  2025

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2025-05-21. DSLD Label ID: 328615. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.