Life Extension Bio-Quercetin
- Combination Supplement
- Capsule
- Bio-Quercetin phytosome
- 30
- Better rated than 59%
- More reviewed than 69%
A phytosome-based quercetin supplement built around improved absorption over standard quercetin, worth the format if bioavailability is the reason you chose quercetin in the first place.
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How it ranks among the 61 combination supplement we track
4.6★ across 1,700 Amazon ratings, Bayesian-smoothed toward the category average.
1,700 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
2,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 61 combination supplement we track - how the scorecard works · full combination supplement data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
Life Extension's Bio-Quercetin uses a quercetin phytosome formulation in a 30-capsule bottle, positioned for immune and heart health support and labeled gluten free, non-GMO and vegetarian.
Standard quercetin is known for being poorly absorbed by the body, and the phytosome delivery method used here is specifically meant to address that, with the listing citing up to 18 times more bioavailable free quercetin and as much as 62 times better total bioavailability compared to unformulated quercetin. That bioavailability claim is the main differentiator versus a plain quercetin capsule.
- Bio-Quercetin phytosome formula
- Up to 18x more bioavailable free quercetin per the listing
- Gluten free, non-GMO, vegetarian
- 30 capsules per bottle
Who it's for
Suited to people who have looked into quercetin specifically and want a bioavailability-enhanced version rather than a standard capsule. Less relevant to anyone wanting a general multivitamin or a lower-cost plain quercetin product, since phytosome formulations tend to carry a price premium.
Strengths and trade-offs
Drawn from this product's published specifications.
- Phytosome formulation aimed at higher absorption than standard quercetin
- Gluten free, non-GMO and vegetarian
- 30-count bottle, simple one-a-day sizing
- 30 capsules means a shorter supply than larger vitamin bottles
- Bioavailability multiples come from the manufacturer's own listing, not an independent test cited in the data
Performance notes
Phytosome technology binds the active compound to a fat-soluble carrier so it moves through the digestive lining more readily than the free compound would on its own, which is the mechanism behind the bioavailability figures cited for this product. Because it is a 30-capsule bottle, the practical dosing window is about a month at one capsule a day before a refill is needed.
Specifications
| Brand | Life |
|---|---|
| Model | 02302 |
| Form | Capsule |
| Supplement Type | Bio-Quercetin phytosome |
| Count | 30 |
| Flavor | Unflavored |
| Benefits | Delivers 18x more bioavailable free quercetin (up to 62x better total bioavailab |
| Diet | Gluten Free |
| Allergens | Gluten Free |
Other Life combination supplement
How it compares
This product against the closest alternatives we track in combination supplement.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Life Extension Bio-QuercetinThis product | 4.6 / 5 | 1,700 | 4.4 / 5 |
| Carlyle Tart Cherry Extract CapsulesCarlyle | 4.6 / 5 | 11,200 | 4.6 / 5 |
| Integrative Therapeutics Active B-ComplexIntegrative | 4.6 / 5 | 7,500 | 4.6 / 5 |
| Heliocare Skin Care Dietary Supplement: 240mg Polypodium Leucotomos Extract PillsHeliocare | 4.6 / 5 | 5,700 | 4.5 / 5 |
| Pure Encapsulations NAC 600 mgPURE | 4.7 / 5 | 3,800 | 4.6 / 5 |
Similar combination supplement from other brands
Questions about the Life 02302
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What makes this different from regular quercetin?
It uses a phytosome delivery form the listing describes as delivering up to 18 times more bioavailable free quercetin than standard quercetin.
Is Life Extension Bio-Quercetin vegetarian?
Yes, it is labeled vegetarian, gluten free and non-GMO.
How many capsules are in one bottle?
30 capsules.