Originally published by super-achiever.com · retrieved 2026-10-30T17:55:38+00:00. Republished here with permission.
The scores, test results, and opinions below are the original source's own and are not independent lab testing or ratings performed by NutritionByMias.
Double Wood Quercetin with Bromelain Review
#5 of 9 · Highest Purity Combo✓ Label verified · Supplement Facts read Sep 7, 2026Real retailer photo, cut out. Label unedited.
Consider it. Best-spec plain combo, same absorption ceiling. If you want the highest purity and bromelain content in an unenhanced combo from a COA-transparent seller, Double Wood is it.
~$25~$0.42 / 2-cap serving
Why It Scores 6.6 — And The Label Line Behind Each Number
Form & Bioavailability
35% of score
Higher purity than typical budget extracts, but still an unenhanced quercetin, so absorption remains low. Purity improves what’s in the cap, not how much reaches your blood.
- Form
- 96% purified quercetin + bromelain, capsule
Third-Party Testing & Purity
20% of score
States 96% purity, third-party tested, vegan-safe, gluten-free, with COAs available from a single-SKU seller. Good transparency for the price band.
- Testing
- Third-party tested, COAs available
Dose vs Clinical Range
20% of score
1,000 mg quercetin per two-cap serving matches the top of the studied range, with the highest bromelain co-dose (200 mg) in the set.
- Dose
- 1,000 mg quercetin + 200 mg bromelain per 2-cap serving
Tolerability & Safety
10% of score
Well tolerated; higher bromelain content means the usual blood-thinner and pineapple-allergy cautions apply a bit more. Large two-cap serving.
Value
15% of score
~$25 for 60 servings is fair but not category-leading; you pay a small premium for the purity claim and COA transparency over Nutricost.
- Count
- 120 capsules (60 servings)
- Cost per dose
- ~$0.42 per 2-cap serving (~$25/60)
- More Specs
- Standardization
- Stated 96% quercetin purity
Label verified. Every figure read from the Supplement Facts photo, Sep 7, 2026.
Marketing Claims Vs. Reality
96% purity means better results than lower-purity quercetin
Higher purity improves label accuracy but is not shown to improve clinical outcomes; the binding constraint for plain quercetin is absorption, not the small purity difference.
The product provides 1,000 mg quercetin per capsule
Per the label the 1,000 mg is a two-capsule serving, not per capsule; each cap carries roughly 500 mg quercetin.
What Our Test Actually Found
Transparency is the genuine differentiator
Publishing COAs and a specific purity figure from a single-brand seller is more accountability than many competitors offer, and it’s a legitimate reason to prefer Double Wood within the plain-combo tier.
Purity and absorption are different problems
A cleaner extract still needs a delivery system to be absorbed well. The 96% figure is a quality signal, not a bioavailability upgrade, so this stays mid-pack behind the phytosomes.
Full analysis: all pros & cons (7), buy if / skip if
- Stated 96% purity, above typical budget extracts
- Highest bromelain pairing in the set (200 mg)
- COA-transparent single-brand seller
- Full 1,000 mg quercetin per serving
- Still unenhanced quercetin, so absorption is low
- 1,000 mg is a two-cap serving, not per cap
- Mid-pack value versus Nutricost’s cheaper per-gram
- Stated 96% purity, above typical budget extracts
- Highest bromelain pairing in the set (200 mg)
- COA-transparent single-brand seller
- Still unenhanced quercetin, so absorption is low
- 1,000 mg is a two-cap serving, not per cap
- Mid-pack value versus Nutricost’s cheaper per-gram
If you want the highest purity and bromelain content in an unenhanced combo from a COA-transparent seller, Double Wood is it. Just don’t mistake 96% purity for bioavailability; a phytosome still delivers more usable quercetin.
Double Wood leans on transparency: stated 96% quercetin purity (above the ~70-90% typical of budget extracts), the highest bromelain pairing here at 200 mg, and published COAs. It’s a 1,000 mg quercetin plus 200 mg bromelain two-cap serving. On paper it’s the strongest plain combo. In practice it shares the category’s ceiling, since even purified quercetin isn’t well absorbed without a delivery system.
The spec sheet leader among plain combos
Double Wood is the pick if purity and transparency top your list and you want the highest bromelain co-dose. It earns a solid mid-tier spot, but purity doesn’t defeat quercetin’s absorption problem, so it lands behind the phytosomes and the cheaper tested combos.
If This Doesn’t Fit — Try These
04Nutricost Quercetin + Bromelain
Nutricost is the pick if you want the highest plain-quercetin dose per dollar with a lab test attached.
02Thorne Quercetin Phytosome
If you want the most trustworthy label on the shelf and cost is no object, Thorne is the pick.
Quick Answers
Does 96% purity make it worth more?
It’s a real quality signal and above many budget extracts, but purity doesn’t fix absorption, so it won’t outperform a phytosome on effective delivery.
Is the 200 mg bromelain a real advantage?
It’s the highest bromelain dose here, useful if you want the enzyme for anti-inflammatory/allergy support, though the quercetin-absorption benefit of bromelain remains unproven in humans.
Sources & Further Reading
2 peer-reviewed sources, each linked to PubMed
- [1] Li Y, et al. Nutrients. 2016;8(3):167. PMID 26999194 — Quercetin, Inflammation and Immunity. Details quercetin’s poor intrinsic bioavailability as a key barrier to translating mechanistic effects into human outcomes.
- [2] Mlcek J, et al. Molecules. 2016;21(5):623. PMID 27187333 — Quercetin and Its Anti-Allergic Immune Response. Reviews quercetin’s mast-cell-stabilizing, anti-allergic mechanisms, which are largely preclinical rather than confirmed in large human allergy trials.
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