Best-spec plain combo, same absorption ceiling
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.
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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.
States 96% purity, third-party tested, vegan-safe, gluten-free, with COAs available from a single-SKU seller. Good transparency for the price band.
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.
Well tolerated; higher bromelain content means the usual blood-thinner and pineapple-allergy cautions apply a bit more. Large two-cap serving.
~$25 for 60 servings is fair but not category-leading; you pay a small premium for the purity claim and COA transparency over Nutricost.
“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.
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.
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.
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.
Details quercetin's poor intrinsic bioavailability as a key barrier to translating mechanistic effects into human outcomes.
Reviews quercetin's mast-cell-stabilizing, anti-allergic mechanisms, which are largely preclinical rather than confirmed in large human allergy trials.
